User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0 Build ID: 20180906100252 Steps to reproduce: 1. Open Browser Console. Create enough entries so the scrollbar is present. 2. Click and hold the scroll box/thumb. Do NOT release the mouse click. 3. Move mouse outside Browser Console window. 4. Release mouse click. 5. Move mouse back inside Browser Console. 6. Move mouse up and down. Actual results: Browser Console still scrolls despite having released the mouse click. Please refer to the attached video. P.s. my screen capture program does not record mouse clicks. Please distinguish different states by the colors of scroll box: Dark grey: mouse clicked and held Medium grey: mouse hovering Light grey: mouse not clicked Expected results: Browser Console should not scroll after releasing mouse click.
From Mozregression, Last good Nightly: 2018-07-18 First bad Nightly: 2018-07-19 regression range is: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=d94abfaa59928d8fd87f74dbde2ae82d9b7ba667&tochange=d67618d9ba00e9384114989daddbbdc86daf1ad7 Further bisection points to bug 1472599 but I think bug 1469341 may be the real cause.
Marking fix-optional for 64. We could still take a patch for 65, and if it's verified and doesn't seem risky, could still take fixes for 64 as well.
No update over the last 2 months, updating tracking flags as we get closer to the 64 release.
Happy to take a patch in nightly; if it seems low risk enough please feel free to request uplift to 65 beta.
Flags: needinfo?(bgrinstead) → needinfo?(bdahl)
You need to log in before you can comment on or make changes to this bug.