Just because we have to use the non-simplified text measuring, it does not mean the measured width is not cacheable.
Created attachment 444913 [details] Patch
Created attachment 444927 [details] Patch
Committed r286101 (244488@main): <https://commits.webkit.org/244488@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 444927 [details].
<rdar://problem/85647459>