Bug 232465

Summary: [ iOS iPhone 12] fast/table tests are flaky failure
Product: WebKit Reporter: ayumi_kojima
Component: New BugsAssignee: Nobody <webkit-unassigned>
Status: RESOLVED DUPLICATE    
Severity: Normal CC: dino, webkit-bot-watchers-bugzilla, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: iPhone / iPad   
OS: Unspecified   
See Also: https://bugs.webkit.org/show_bug.cgi?id=232384
Attachments:
Description Flags
Test list none

Description ayumi_kojima 2021-10-28 17:10:55 PDT 
fast/table/colgroup-spanning-groups-rules.html
fast/table/frame-and-rules.html
fast/table/hidpi-collapsed-border-with-odd-pixel-width.html
fast/table/overflowHidden.html
fast/table/rules-attr-dynchange1.html
fast/table/rules-attr-dynchange2.html
fast/table/simple_paint.html
fast/table/table-in-table-percent-width-collapsing-border-quirks-mode.html
fast/table/table-in-table-percent-width-collapsing-border.html

Are flaky failing on iOS 15 Simulator wk2 on iPhone 12.

History: https://results.webkit.org/?suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&suite=layout-tests&test=fast%2Ftable%2Fcolgroup-spanning-groups-rules.html&test=fast%2Ftable%2Fframe-and-rules.html&test=fast%2Ftable%2Fhidpi-collapsed-border-with-odd-pixel-width.html&test=fast%2Ftable%2FoverflowHidden.html&test=fast%2Ftable%2Frules-attr-dynchange1.html&test=fast%2Ftable%2Frules-attr-dynchange2.html&test=fast%2Ftable%2Fsimple_paint.html&test=fast%2Ftable%2Ftable-in-table-percent-width-collapsing-border-quirks-mode.html&test=fast%2Ftable%2Ftable-in-table-percent-width-collapsing-border.html

Result page: https://build.webkit.org/results/Apple-iOS-15-Simulator-Release-WK2-Tests/r284991%20(344)/results.html#

Diff:

--- /Volumes/Data/worker/ios-simulator-15-release-tests-wk2/build/layout-test-results/fast/table/colgroup-spanning-groups-rules-expected.txt
+++ /Volumes/Data/worker/ios-simulator-15-release-tests-wk2/build/layout-test-results/fast/table/colgroup-spanning-groups-rules-actual.txt
@@ -3,111 +3,111 @@
 layer at (0,0) size 800x600
   RenderBlock {HTML} at (0,0) size 800x600
     RenderBody {BODY} at (8,8) size 784x584
-      RenderTable {TABLE} at (0,0) size 240x226 [border: (0.50px solid #808080)]
+      RenderTable {TABLE} at (0,0) size 238x226 [border: (0.33px solid #808080)]
         RenderTableCol {COLGROUP} at (0,0) size 0x0 [border: none (1px solid #000000) none (1px solid #000000)]
         RenderTableCol {COLGROUP} at (0,0) size 0x0 [border: none (1px solid #000000) none (1px solid #000000)]
-        RenderTableSection {TBODY} at (0,0) size 239x226 [border: (1px solid #808080) none (1px solid #808080) none]
-          RenderTableRow {TR} at (0,0) size 239x29
-            RenderTableCell {TH} at (0,0) size 83x29 [border: (0.50px none #000000)] [r=0 c=0 rs=1 cs=1]
+        RenderTableSection {TBODY} at (0,0) size 238x225 [border: (1px solid #808080) none (1px solid #808080) none]
+          RenderTableRow {TR} at (0,0) size 238x29
+            RenderTableCell {TH} at (0,0) size 83x29 [border: (0.33px none #000000)] [r=0 c=0 rs=1 cs=1]
               RenderText {#text} at (9,4) size 64x20
                 text run at (9,4) width 64: "Weekday"
-            RenderTableCell {TH} at (82,0) size 46x29 [border: (0.50px none #000000)] [r=0 c=1 rs=1 cs=1]
+            RenderTableCell {TH} at (82,0) size 45x29 [border: (0.33px none #000000)] [r=0 c=1 rs=1 cs=1]
               RenderText {#text} at (6,4) size 33x20
                 text run at (6,4) width 33: "Date"
-            RenderTableCell {TH} at (127,0) size 71x29 [border: (0.50px none #000000)] [r=0 c=2 rs=1 cs=1]
+            RenderTableCell {TH} at (126,0) size 71x29 [border: (0.33px none #000000)] [r=0 c=2 rs=1 cs=1]
               RenderText {#text} at (4,4) size 63x20
                 text run at (4,4) width 63: "Manager"
-            RenderTableCell {TH} at (197,0) size 42x29 [border: (0.50px none #000000)] [r=0 c=3 rs=1 cs=1]
+            RenderTableCell {TH} at (197,0) size 41x29 [border: (0.33px none #000000)] [r=0 c=3 rs=1 cs=1]
               RenderText {#text} at (7,4) size 26x20
                 text run at (7,4) width 26: "Qty"
-          RenderTableRow {TR} at (0,28) size 239x29
+          RenderTableRow {TR} at (0,28) size 238x29
             RenderTableCell {TD} at (0,28) size 83x29 [border: none] [r=1 c=0 rs=1 cs=1]
               RenderText {#text} at (4,4) size 54x19
                 text run at (4,4) width 54: "Monday"
-            RenderTableCell {TD} at (82,28) size 46x29 [border: none] [r=1 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (82,28) size 45x29 [border: none] [r=1 c=1 rs=1 cs=1]
               RenderText {#text} at (4,4) size 37x19
                 text run at (4,4) width 37: "09/11"
-            RenderTableCell {TD} at (127,28) size 71x29 [r=1 c=2 rs=1 cs=1]
+            RenderTableCell {TD} at (126,28) size 71x29 [r=1 c=2 rs=1 cs=1]
               RenderText {#text} at (4,4) size 45x19
                 text run at (4,4) width 45: "Kelsey"
-            RenderTableCell {TD} at (197,28) size 42x29 [border: none] [r=1 c=3 rs=1 cs=1]
+            RenderTableCell {TD} at (197,28) size 41x29 [border: none] [r=1 c=3 rs=1 cs=1]
               RenderText {#text} at (4,4) size 24x19
                 text run at (4,4) width 24: "639"
-          RenderTableRow {TR} at (0,56) size 239x29
+          RenderTableRow {TR} at (0,56) size 238x29
             RenderTableCell {TD} at (0,56) size 83x29 [border: none] [r=2 c=0 rs=1 cs=1]
-              RenderText {#text} at (4,4) size 55x19
-                text run at (4,4) width 55: "Tuesday"
-            RenderTableCell {TD} at (82,56) size 46x29 [border: none] [r=2 c=1 rs=1 cs=1]
+              RenderText {#text} at (4,4) size 54x19
+                text run at (4,4) width 54: "Tuesday"
+            RenderTableCell {TD} at (82,56) size 45x29 [border: none] [r=2 c=1 rs=1 cs=1]
               RenderText {#text} at (4,4) size 37x19
                 text run at (4,4) width 37: "09/12"
-            RenderTableCell {TD} at (127,56) size 71x29 [r=2 c=2 rs=1 cs=1]
+            RenderTableCell {TD} at (126,56) size 71x29 [r=2 c=2 rs=1 cs=1]
               RenderText {#text} at (4,4) size 52x19
                 text run at (4,4) width 52: "Lindsey"
-            RenderTableCell {TD} at (197,56) size 42x29 [border: none] [r=2 c=3 rs=1 cs=1]
+            RenderTableCell {TD} at (197,56) size 41x29 [border: none] [r=2 c=3 rs=1 cs=1]
               RenderText {#text} at (4,4) size 24x19
                 text run at (4,4) width 24: "596"
-          RenderTableRow {TR} at (0,84) size 239x29
+          RenderTableRow {TR} at (0,84) size 238x29
             RenderTableCell {TD} at (0,84) size 83x29 [border: none] [r=3 c=0 rs=1 cs=1]
               RenderText {#text} at (4,4) size 74x19
                 text run at (4,4) width 74: "Wednesday"
-            RenderTableCell {TD} at (82,84) size 46x29 [border: none] [r=3 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (82,84) size 45x29 [border: none] [r=3 c=1 rs=1 cs=1]
               RenderText {#text} at (4,4) size 37x19
                 text run at (4,4) width 37: "09/13"
-            RenderTableCell {TD} at (127,84) size 71x29 [r=3 c=2 rs=1 cs=1]
+            RenderTableCell {TD} at (126,84) size 71x29 [r=3 c=2 rs=1 cs=1]
               RenderText {#text} at (4,4) size 42x19
                 text run at (4,4) width 42: "Randy"
-            RenderTableCell {TD} at (197,84) size 42x29 [border: none] [r=3 c=3 rs=1 cs=1]
+            RenderTableCell {TD} at (197,84) size 41x29 [border: none] [r=3 c=3 rs=1 cs=1]
               RenderText {#text} at (4,4) size 32x19
                 text run at (4,4) width 32: "1135"
-          RenderTableRow {TR} at (0,112) size 239x29
+          RenderTableRow {TR} at (0,112) size 238x29
             RenderTableCell {TD} at (0,112) size 83x29 [border: none] [r=4 c=0 rs=1 cs=1]
               RenderText {#text} at (4,4) size 61x19
                 text run at (4,4) width 61: "Thursday"
-            RenderTableCell {TD} at (82,112) size 46x29 [border: none] [r=4 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (82,112) size 45x29 [border: none] [r=4 c=1 rs=1 cs=1]
               RenderText {#text} at (4,4) size 37x19
                 text run at (4,4) width 37: "09/14"
-            RenderTableCell {TD} at (127,112) size 71x29 [r=4 c=2 rs=1 cs=1]
+            RenderTableCell {TD} at (126,112) size 71x29 [r=4 c=2 rs=1 cs=1]
               RenderText {#text} at (4,4) size 39x19
                 text run at (4,4) width 39: "Susan"
-            RenderTableCell {TD} at (197,112) size 42x29 [border: none] [r=4 c=3 rs=1 cs=1]
+            RenderTableCell {TD} at (197,112) size 41x29 [border: none] [r=4 c=3 rs=1 cs=1]
               RenderText {#text} at (4,4) size 32x19
                 text run at (4,4) width 32: "1002"
-          RenderTableRow {TR} at (0,140) size 239x29
+          RenderTableRow {TR} at (0,140) size 238x29
             RenderTableCell {TD} at (0,140) size 83x29 [border: none] [r=5 c=0 rs=1 cs=1]
               RenderText {#text} at (4,4) size 43x19
                 text run at (4,4) width 43: "Friday"
-            RenderTableCell {TD} at (82,140) size 46x29 [border: none] [r=5 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (82,140) size 45x29 [border: none] [r=5 c=1 rs=1 cs=1]
               RenderText {#text} at (4,4) size 37x19
                 text run at (4,4) width 37: "09/15"
-            RenderTableCell {TD} at (127,140) size 71x29 [r=5 c=2 rs=1 cs=1]
+            RenderTableCell {TD} at (126,140) size 71x29 [r=5 c=2 rs=1 cs=1]
               RenderText {#text} at (4,4) size 42x19
                 text run at (4,4) width 42: "Randy"
-            RenderTableCell {TD} at (197,140) size 42x29 [border: none] [r=5 c=3 rs=1 cs=1]
+            RenderTableCell {TD} at (197,140) size 41x29 [border: none] [r=5 c=3 rs=1 cs=1]
               RenderText {#text} at (4,4) size 24x19
                 text run at (4,4) width 24: "908"
-          RenderTableRow {TR} at (0,168) size 239x29
+          RenderTableRow {TR} at (0,168) size 238x29
             RenderTableCell {TD} at (0,168) size 83x29 [border: none] [r=6 c=0 rs=1 cs=1]
               RenderText {#text} at (4,4) size 58x19
                 text run at (4,4) width 58: "Saturday"
-            RenderTableCell {TD} at (82,168) size 46x29 [border: none] [r=6 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (82,168) size 45x29 [border: none] [r=6 c=1 rs=1 cs=1]
               RenderText {#text} at (4,4) size 37x19
                 text run at (4,4) width 37: "09/16"
-            RenderTableCell {TD} at (127,168) size 71x29 [r=6 c=2 rs=1 cs=1]
+            RenderTableCell {TD} at (126,168) size 71x29 [r=6 c=2 rs=1 cs=1]
               RenderText {#text} at (4,4) size 52x19
                 text run at (4,4) width 52: "Lindsey"
-            RenderTableCell {TD} at (197,168) size 42x29 [border: none] [r=6 c=3 rs=1 cs=1]
+            RenderTableCell {TD} at (197,168) size 41x29 [border: none] [r=6 c=3 rs=1 cs=1]
               RenderText {#text} at (4,4) size 24x19
                 text run at (4,4) width 24: "371"
-          RenderTableRow {TR} at (0,196) size 239x29
+          RenderTableRow {TR} at (0,196) size 238x29
             RenderTableCell {TD} at (0,196) size 83x29 [border: none] [r=7 c=0 rs=1 cs=1]
               RenderText {#text} at (4,4) size 49x19
                 text run at (4,4) width 49: "Sunday"
-            RenderTableCell {TD} at (82,196) size 46x29 [border: none] [r=7 c=1 rs=1 cs=1]
+            RenderTableCell {TD} at (82,196) size 45x29 [border: none] [r=7 c=1 rs=1 cs=1]
               RenderText {#text} at (4,4) size 37x19
                 text run at (4,4) width 37: "09/17"
-            RenderTableCell {TD} at (127,196) size 71x29 [border: none] [r=7 c=2 rs=1 cs=1]
+            RenderTableCell {TD} at (126,196) size 71x29 [border: none] [r=7 c=2 rs=1 cs=1]
               RenderText {#text} at (4,4) size 39x19
                 text run at (4,4) width 39: "Susan"
-            RenderTableCell {TD} at (197,196) size 42x29 [border: none] [r=7 c=3 rs=1 cs=1]
+            RenderTableCell {TD} at (197,196) size 41x29 [border: none] [r=7 c=3 rs=1 cs=1]
               RenderText {#text} at (4,4) size 24x19
                 text run at (4,4) width 24: "272"
Comment 1 Radar WebKit Bug Importer 2021-10-28 17:12:50 PDT 
<rdar://problem/84785958>
Comment 2 ayumi_kojima 2021-10-29 15:01:55 PDT 
I was able to reproduce the failures at TOT locally on iOS 15 sim (iPhone 12) using run-webkit-tests --ios-simulator --child-processes 1 --test-list <test list>.

I was not able to reproduce the failures on iPhone SE 2nd generation.
Comment 3 ayumi_kojima 2021-10-29 15:02:16 PDT 
Created attachment 442868 [details]
Test list
Comment 4 zalan 2022-04-07 10:47:12 PDT 
This looks to me a configuration issue where we see (unexpected) 3x display modes.
Comment 5 Alexey Proskuryakov 2022-04-25 16:24:30 PDT 
Looks like this got fixed with r292749.

*** This bug has been marked as a duplicate of bug 232384 ***