Nightly 59 x64 20171209220110 de_DE @ Debian Testing (KDE, Radeon RX480) https://twitter.com/mike_conley mozregression --good 2017-12-05 --bad 2017-12-10 --pref "layers.acceleration.force-enabled:true" "gfx.webrender.enabled:true" "gfx.webrender.blob-images:true" "image.mem.shared:true" > 12:00.58 INFO: Last good revision: 27fdcafdb961e51fd792bf8563c5d1fd70b10100 > 12:00.58 INFO: First bad revision: bdc16b1eab501e3e8c86d01447a727fcb268bab2 > 12:00.58 INFO: Pushlog: > https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=27fdcafdb961e51fd792bf8563c5d1fd70b10100&tochange=bdc16b1eab501e3e8c86d01447a727fcb268bab2 > bdc16b1eab50 Kartikaya Gupta — Bug 1423203 - Update Cargo lockfiles and revendor rust dependencies. r=jrmuizel > 09af0af978a0 Kartikaya Gupta — Bug 1423203 - Update webrender to commit 22f472f0adb02bd71c472e426e47182f2b218f6d. r=jrmuizel

"Screenshot_20171210_023749.png" looks like "Screenshot 20171210 023749.png" That cut off line flickers while scrolling. Some letters are cutt off on their right side. (n->r, d->c, etc.)

WR @ 5756b2ee8bccb5d5364f9c9b2a8c5e4a6aaa622f https://treeherder.mozilla.org/#/jobs?repo=try&revision=f0524ad0004641af718ea311b15cd07f8d2a5554 (Linux x64 opt) good WR @ b281bd2b324fdb9df61b839aff56651946a6efb3 https://treeherder.mozilla.org/#/jobs?repo=try&revision=311a2ee898548b1df2ff791b026804a533080e32 = bad https://github.com/servo/webrender/compare/5756b2ee8bccb5d5364f9c9b2a8c5e4a6aaa622f...b281bd2b324fdb9df61b839aff56651946a6efb3

If you manually revert this patch here: https://github.com/servo/webrender/commit/47a70ddc0aaf07e3769b67da0f1b445d5ffb7b42 Does the problem go away?

Forgot one try build from bug 1423203. WR @ 22f472f0adb02bd71c472e426e47182f2b218f6d https://treeherder.mozilla.org/#/jobs?repo=try&revision=05b03ab035373f3b2283f626a0525275a4485a22 = bad https://github.com/servo/webrender/compare/5756b2ee8bccb5d5364f9c9b2a8c5e4a6aaa622f...22f472f0adb02bd71c472e426e47182f2b218f6d https://github.com/servo/webrender/pull/2188

But does the problem go away if you revert the patch I pointed to?

Could you please make a linux64 try build?

(In reply to Jan Andre Ikenmeyer [:darkspirit] from comment #6) > Could you please make a linux64 try build? That would take a bit. In local testing I was not able to reproduce this at all. You're not using any special bitmap fonts here or the like?

I haven't changed any font settings in Nightly. And setting anti-aliasing back to default and restarting Nightly had no effect.

Pushed a try run here: https://treeherder.mozilla.org/#/jobs?repo=try&revision=4d63e10b6533f2e1c8a8a8c374d995cd52eff5ab Once the builds are ready there, please try it and see if it fixes your issue.

(In reply to Lee Salzman [:lsalzman] from comment #9) > Pushed a try run here: > https://treeherder.mozilla.org/#/jobs?repo=try&revision=4d63e10b6533f2e1c8a8a8c374d995cd52eff5ab > > Once the builds are ready there, please try it and see if it fixes your issue. Thank you! Yes, it's fixed in "Linux x64 opt".

Fixed by WR PR: https://github.com/servo/webrender/pull/2213

Verified fixed in Nightly 59 x64 20171210220040 de_DE @ Debian Testing (KDE, Radeon RX480). Thank you!