220850 2021-01-22 02:14:59 -0800 Pieces of prior text draw remain when redrawing after updating text properties 2021-01-27 02:05:38 -0800 1 1 1 Unclassified WebKit SVG Safari 14 Mac (Intel) macOS 10.14 RESOLVED DUPLICATE 6274 P2 Normal --- 1 ifiz.dev webkit-unassigned mmaxfield zimmermann oldest_to_newest 1721528 0 418121 ifiz.dev 2021-01-22 02:14:59 -0800 Created attachment 418121 Consistent reproduction pattern Redrawing a text element after font family or font size changes can result in pieces of the old draw remaining on screen. It mainly seems to occur when the updated text has decreased in size in comparison to before the update. Resizing the window, removing focus from the window or changing style attributes on the text element will clear the remnants of the old draw. This seems to be dependent on the used font, but can be consistently reproduced (see attachment). 1721938 1 ap 2021-01-24 17:12:25 -0800 Dupe of bug 6274? 1722874 2 ifiz.dev 2021-01-27 02:05:19 -0800 (In reply to Alexey Proskuryakov from comment #1) > Dupe of bug 6274? I think you're right. The remaining pixels are exactly the part of the glyph that are outside the bounds of the text. This explains why it does not happen for all fonts. Thanks for taking a look, I'll mark this as duplicate. 1722875 3 ifiz.dev 2021-01-27 02:05:38 -0800 *** This bug has been marked as a duplicate of bug 6274 *** 418121 2021-01-22 02:14:59 -0800 2021-01-22 02:14:59 -0800 Consistent reproduction pattern safarI-text-redraw-issue.html text/html 1000 ifiz.dev PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KPGhlYWQ+CiAgICA8bWV0YSBjaGFyc2V0 PSJVVEYtOCI+CjwvaGVhZD4KPGJvZHk+CjxzdmcgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIw MDAvc3ZnIiB3aWR0aD0iMTAwJSIgaGVpZ2h0PSIxMDAlIj4KICAgIDxnIHRyYW5zZm9ybT0ic2Nh bGUoOCw4KSI+CiAgICAgICAgPHRleHQgZmlsbD0iIzAwMDAwMCIgeD0iMTIiIHk9IjE4Ij5UZXh0 PC90ZXh0PgogICAgPC9nPgo8L3N2Zz4KPHNjcmlwdD4KICAgIGNvbnN0IHRleHQgPSBkb2N1bWVu dC5xdWVyeVNlbGVjdG9yKCd0ZXh0Jyk7CiAgICBjb25zdCBiYXNlRm9udFNpemUgPSAyMDsKICAg IGxldCBhY3RpdmVGb250SW5kZXggPSAwOwogICAgbGV0IGZvbnRTaXplTW9kaWZpZXIgPSAwOwoK ICAgIGNvbnN0IGZvbnRzID0gWwogICAgICAgICdBbCBUYXJpa2gnLAogICAgICAgICdESU4gQ29u ZGVuc2VkJywKICAgICAgICAnU25lbGwgUm91bmRoYW5kJywKICAgICAgICAnQ29yc2l2YSBIZWJy ZXcnCiAgICBdOwoKICAgIGNvbnN0IGludGVydmFsID0gc2V0SW50ZXJ2YWwoKCkgPT4gewogICAg ICAgIHRleHQuc2V0QXR0cmlidXRlKCdmb250LWZhbWlseScsIGZvbnRzW2FjdGl2ZUZvbnRJbmRl eF0pOwogICAgICAgIHRleHQuc2V0QXR0cmlidXRlKCdmb250LXNpemUnLCBgJHsgYmFzZUZvbnRT aXplIC0gZm9udFNpemVNb2RpZmllciB9cHhgKTsKCiAgICAgICAgYWN0aXZlRm9udEluZGV4Kys7 CiAgICAgICAgZm9udFNpemVNb2RpZmllcisrOwoKICAgICAgICBpZiAoYWN0aXZlRm9udEluZGV4 ID4gZm9udHMubGVuZ3RoIC0gMSkgewogICAgICAgICAgICBhY3RpdmVGb250SW5kZXggPSAwOwog ICAgICAgIH0KCiAgICAgICAgaWYgKGZvbnRTaXplTW9kaWZpZXIgPj0gYmFzZUZvbnRTaXplKSB7 CiAgICAgICAgICAgIGNsZWFySW50ZXJ2YWwoaW50ZXJ2YWwpOwogICAgICAgIH0KICAgIH0sIDM1 MCk7Cgo8L3NjcmlwdD4KPC9ib2R5Pgo8L2h0bWw+Cg==