arni2033 Reporter
	Description • 8 years ago

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
0. Set zoom level on Bugzilla to 100%, use monitor with a resolution 1280x1024
1. Log in on Bugzilla
2. Open bug 1229773 (or probably even this bug)
3. Hold Ctrl key
4. Rotate mouse wheel up 2 times with an interval of 3 seconds

AR:  Each time zoom level is increased using mouse wheel, horizontal scrollbar briefly appears
ER:  Horizontal scrollbar should only appear if the page is scrollable

Note:
 On the screencast you can see how "Save changes" button changes its position faster than the rest
 of content. I think this is what's causing horizontal scrollbar, given that it's not reproducible
 when I'm not logged in on Bugzilla.

	Kartikaya Gupta (email:kats@mozilla.staktrace.com)
	Comment 2 • 8 years ago

I agree that the mis-positioning of the "Save changes" button appears to be causing the scrollbar to appear, based on the video you attached. That would indicate a layout bug, moving to that component.

	Timothy Nikkel (:tnikkel)
	Comment 3 • 8 years ago

I'm guessing this is because we interrupt a long running layout before it's finished and paint.