190905 2018-10-25 10:10:28 -0700 REGRESSION (r237255): Selection not painted for text with overflow:hidden 2018-10-25 12:52:43 -0700 1 1 1 Unclassified WebKit Layout and Rendering WebKit Nightly Build Mac macOS 10.14 RESOLVED DUPLICATE 190899 InRadar, Regression P1 Normal --- 189833 1 dbates ajuma ajuma bfulgham mitz simon.fraser webkit-bug-importer zalan oldest_to_newest 1472094 0 dbates 2018-10-25 10:10:28 -0700 Selection is no longer painted for text with CSS overflow:hidden. Open the page with the following markup in Safari: [[ <style> .test { text-decoration: underline; } .test::selection { background-color: blue; color: white; } .hidden { overflow: hidden; } </style> <p class="test">First line of text.</p> <p class="test hidden">Second line of text</p> ]] Click and drag from the word "Second" in the second line of text to the end of the line. No selection highlight is drawn. Compare to the behavior of clicking and dragging from the word "First" in the first line to the end of that line. I would have expected the same selection behavior for both lines. Additionally, if you focus the page and choose Edit > Select All then only the first line and the gap between the first and second line are painted as selected. That is, the second line of text is not painted as selected. I would have expected all lines of text to have been painted as selected. Weirdly, if you go through the motions to select the second line of text (e.g. click and drag from the word "Second" in the second of line text to the end of the line) then click where the selection would have been painted then the selection will be painted. 1472096 1 webkit-bug-importer 2018-10-25 10:11:02 -0700 <rdar://problem/45557072> 1472098 2 353090 dbates 2018-10-25 10:12:19 -0700 Created attachment 353090 Example For convenience, here is a file with the markup given in comment #0. 1472131 3 dbates 2018-10-25 11:28:58 -0700 This regression was caused by <http://trac.webkit.org/changeset/237255> (bug #189833) 1472133 4 dbates 2018-10-25 11:30:16 -0700 *** This bug has been marked as a duplicate of bug 190899 *** 1472154 5 ajuma 2018-10-25 12:51:43 -0700 Reopening to attach new patch. 1472158 6 ajuma 2018-10-25 12:52:43 -0700 Whoops, meant to attach a patch to the other bug. *** This bug has been marked as a duplicate of bug 190899 *** 353090 2018-10-25 10:12:19 -0700 2018-10-25 10:12:19 -0700 Example example.html text/html 248 dbates PHN0eWxlPgoudGVzdCB7CiAgICB0ZXh0LWRlY29yYXRpb246IHVuZGVybGluZTsKfQoKLnRlc3Q6 OnNlbGVjdGlvbiB7CiAgICBiYWNrZ3JvdW5kLWNvbG9yOiBibHVlOwogICAgY29sb3I6IHdoaXRl Owp9CgouaGlkZGVuIHsKICAgIG92ZXJmbG93OiBoaWRkZW47Cn0KPC9zdHlsZT4KPHAgY2xhc3M9 InRlc3QiPkZpcnN0IGxpbmUgb2YgdGV4dC48L3A+CjxwIGNsYXNzPSJ0ZXN0IGhpZGRlbiI+U2Vj b25kIGxpbmUgb2YgdGV4dDwvcD4=