Pointer clicks and hovering fail to have effect at the very left and top borders of screen

Bug #1690671 reported by Douglas Silva
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
gtk+3.0 (Ubuntu)
New
Undecided
Unassigned

Bug Description

THE ISSUE:
The pointer (happens with mouse, but it's worse with touchpad) fails to click or highlight any object at the very last pixel of the left and top borders of the screen. If there is a menu at the top, for instance, the highlighting that should appear on top of it starts to flicker on and off. If the icon highlights, I can click. If it doesn't, clicking such menu icon doesn't have any effect. It happens at the last pixel of the screen. Moving the pointer just one pixel away from the border restores the desired effect.

This affects any desktop environment made with gtk+3, such as MATE, Pantheon, parts of Xfce, Budgie and probably others. GNOME and Unity are not affected. Any DE still using gtk2 works fine. I tested 3 different computers with Intel Graphics and they were all displaying the same glitch.

It can always be reproduced. I can record a video of the issue if needed.

description: updated
description: updated
summary: Pointer clicks and hovering fail to have effect at the very left and top
- edges of screen
+ borders of screen
description: updated
description: updated
description: updated
description: updated
description: updated
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