paddingBoxRect() is wrong with RTL scrollbars on the left
Created attachment 372010 [details] Patch
I'd add a test for vertical-rl/lr too.
So I guess not.
Comment on attachment 372010 [details] Patch Clearing flags on attachment: 372010 Committed r246389: <https://trac.webkit.org/changeset/246389>
All reviewed patches have been landed. Closing bug.
<rdar://problem/51693800>