In certain cases, when the estimated height is wrong the block re-runs layout on the inline children.
<rdar://problem/30701233>
Created attachment 302679 [details] Patch
Comment on attachment 302679 [details] Patch Clearing flags on attachment: 302679 Committed r212986: <http://trac.webkit.org/changeset/212986>
All reviewed patches have been landed. Closing bug.