Bug 275492 – [macOS] Adding writing suggestions to a grid/flex container temporarily creates a block-level inline box

• Status: RESOLVED
• Resolution: FIXED
• Component: HTML Editing

[Wenson Hsieh]

Alan noticed that writing suggestions can potentially leave the render tree in a temporary broken state:

```
B---YGLSC-- -+  RenderView at (0,0) size 858x1301 renderer (0x142002d00) layout box (0x0) layout->[normal child] layout id->[20]
B-----LS--- -+    HTML RenderBlock at (0,0) size 858x118 renderer (0x142001810) layout box (0x0) node (0x142001080) layout->[normal child] layout id->[20]
B---------- -+      BODY RenderBody at (8,8) size 842x102 renderer (0x142001b00) layout box (0x0) node (0x142001280) (layout overflow 0,0 842x102) (visual overflow -7,-7 849x116) layout->[normal child] layout id->[20]
B---------- -+*       DIV RenderGrid at (0,0) size 0x0 renderer (0x1420040b0) layout box (0x0) node (0x142003e00) layout->[self][normal child] layout id->[0]
B---YG----- -+          RenderBlock at (0,0) size 0x0 renderer (0x142007b30) layout box (0x0) layout->[self][normal child] layout id->[0]
I---------- -+            #text RenderText renderer (0x142006a50) layout box (0x0) node (0x142003f70) length->(12) "I want to ce" layout->[self] layout id->[n/a]
B---YG----- -+          RenderInline (::-internal-writing-suggestions) renderer (0x142007950) layout box (0x0) layout->[self][normal child] layout id->[0]
I---YG----- -+            RenderText (::-internal-writing-suggestions) renderer (0x142007a60) layout box (0x0) length->(7) "lebrate" layout->[self] layout id->[n/a]
```

[zalan]

see https://github.com/WebKit/WebKit/pull/29777#issuecomment-2168597124

[zalan]

Created attachment 471695 [details]
[fast-cq]Patch

[EWS]

Committed 280086@main (a88244b5498e): <https://commits.webkit.org/280086@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 471695 [details].

[Radar WebKit Bug Importer]

<rdar://problem/130027859>