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Bug 785175 - GTK Maximised windows have a 1px gap at the bottom
GTK Maximised windows have a 1px gap at the bottom
Status: RESOLVED DUPLICATE of bug 782671
Product: gtk+
Classification: Platform
Component: Backend: Wayland
3.22.x
Other Linux
: Normal normal
: ---
Assigned To: gtk-bugs
gtk-bugs
Depends on:
Blocks:
 
 
Reported: 2017-07-20 15:34 UTC by François Guerraz
Modified: 2018-03-26 10:55 UTC
See Also:
GNOME target: ---
GNOME version: ---

Attachments
screenshot (14.49 KB, image/png)
2018-03-25 08:40 UTC, François Guerraz 		Details

Description François Guerraz 2017-07-20 15:34:53 UTC 
Description:
GTK applications windows on Gnome (3.24.2, wayland, HiDPI) have a 1px "gap" at the bottom when maximised.
See https://github.com/gnunn1/tilix/issues/1017 for example.

Additional info:
* package version(s) gtk3 3.22.16-1, mutter 3.24.3-1, gnome-shell 3.24.2-1
Tested with default theme (Adwaita) and Arc.


Steps to reproduce:
Open a GTK3 application such as Tilix or gedit, maximise the window and observer the 1px gap at the bottom of the screen.
This does not happen on X11.
Comment 1 François Guerraz 2017-08-10 19:33:55 UTC 
With a 2nd monitor that's not HiDPI, the problem doesn't occur on the normal-DPI display.
Can anybody else reproduce this issue?
Comment 2 Timm Bäder 2017-08-23 05:25:53 UTC 
I can reproduce this on a Chromebook Pixel 1st gen. Can't make a screenshot right now though since I don't know how to make one on wayland without a PrintScreen key ¯\_(ツ)_/¯
Comment 3 François Guerraz 2017-08-23 08:04:17 UTC 
There is a screenshot on the aforementioned tilix bug report.
Comment 4 François Guerraz 2018-03-25 08:40:51 UTC 
Created attachment 370113 [details]
screenshot

Adding a screenshot here as the bug is still present on gnome 3.28.
Comment 5 Timm Bäder 2018-03-26 10:55:43 UTC 
So, the gtk+ wayland backend is just doing a zxdg_toplevel_v6_set_maximized when maximizing a window. This problem happens both with CSD and SSD applications. I notice however that weston --scale=2 does not observe the problem so an issue in mutter seems more likely.

And there's even a bug report about this for mutter already: https://bugzilla.gnome.org/show_bug.cgi?id=782671. Since this seems more likely to be a problem on the compositor side, I'll mark this one as a duplicate.

*** This bug has been marked as a duplicate of bug 782671 ***