instead of storing the length of the overflowing content, let's store the offset where the content starts overflowing
Created attachment 464933 [details] [fast-cq]Patch
Committed 260154@main (93a5b7d1fbc2): <https://commits.webkit.org/260154@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 464933 [details].
<rdar://problem/105330285>