NEW 186746
[RenderTreeBuilder] Do not collapse/clean up anonymous wrappers until after all renderers in the context are destroyed. 
https://bugs.webkit.org/show_bug.cgi?id=186746
Summary [RenderTreeBuilder] Do not collapse/clean up anonymous wrappers until after a...
zalan
Reported 2018-06-16 15:19:41 PDT
For example while destroying a text renderer, if it happens to have a first letter renderer, we try to collapse the anon wrappers while destroying this first letter renderer. The anonymous cleanup should not be started until after both the renderers are detached/deleted.
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