Bug 176956

Summary: CSS background gradient and text shadows draw strange after selecting text, closing app, and reopening
Product: WebKit Reporter: Tom Hamming <tom.hamming>
Component: Layout and RenderingAssignee: Nobody <webkit-unassigned>
Status: NEW    
Severity: Normal CC: bfulgham, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: Safari 10   
Hardware: All   
OS: iOS 11   
Attachments:
Description Flags
Expected appearance
none
Broken appearance
none
Sample Xcode project none

Tom Hamming
Reported 2017-09-14 13:59:47 PDT
Created attachment 320817 [details] Expected appearance When text shadows and background gradients are applied to a span in a UIWebView in an iOS app, if the app is closed, another app is opened and closed, and the original app is opened again, the gradients often draw with a black background. See screenshots and attached example project. Steps: -Run sample project on an iOS device -Quit the app (press the home button, not force-quit or Xcode stop), open and close at least one other app, and reopen the sample app Observed: backgrounds (applied here to create a highlight effect in book text) draw black.
Attachments
Expected appearance (882.46 KB, image/png)
2017-09-14 13:59 PDT, Tom Hamming 		no flags
Details
Broken appearance (828.45 KB, image/png)
2017-09-14 14:00 PDT, Tom Hamming 		no flags
Details
Sample Xcode project (45.66 KB, application/zip)
2017-09-14 14:00 PDT, Tom Hamming 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Tom Hamming
Comment 1 2017-09-14 14:00:09 PDT
Created attachment 320818 [details] Broken appearance
Tom Hamming
Comment 2 2017-09-14 14:00:24 PDT
Created attachment 320819 [details] Sample Xcode project
Tom Hamming
Comment 3 2017-09-14 14:00:54 PDT
This is also filed as Apple radar 33436719.
Tom Hamming
Comment 4 2017-09-14 14:01:29 PDT
(iOS 11)
Simon Fraser (smfr)
Comment 5 2017-09-14 14:16:51 PDT
rdar://problem/33436719
Note You need to log in before you can comment on or make changes to this bug.