1327299 - Panels randomly change their position, so I often can't click buttons

Status: RESOLVED INCOMPLETE

(Firefox :: Untriaged, defect)

Description

[arni2033]

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160526082509
STR_1:
1. Open this url:  "data:,a"
2. Focus urlbar, type  "data:,b" , press Enter
3. Click Back button in urlbar, then Forward button, then Identity block (before url)
4. Click button ">" in identity panel from Step 3

AR:  When I hold left mouse button, panel teleports to the left, so "click" doesn't happen
ER:  Click should be performed in a normal way.  Either X or Y or Z or T

 X) Panels should immediately update their position when anchor changes its position. That would turn
    issue STR_1 from "reliable trap" to "random trap". See definition in bug 1258687 comment 5
 Y) (some?) Panels should not to update their position when anchor changes its position. Maybe a
    mechanism that would allow to configure each panel. Not sure that it won't cause additional issues
 Z) Panel shouldn't update its position if mouse is placed above that panel
 T) Any other clever idea to let me click buttons in panels w/o troubles

Comment 1

[Emil Pasca [:emilpasca]]

User Agent:  Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:53.0) Gecko/20100101 Firefox/53.0

I have tested this issue on Windows 10 x64 with the latest Firefox release (50.1.0), latest Nightly (53.0a1-20170105030229) and also on the Nightly specified by the reporter and haven't managed to reproduce it.

Marking this as Resolved - Incomplete due to the fact that the reporters account has been disabled and can't provide more information.
If anyone can still reproduce it on latest versions, feel free to reopen the issue and provide more information