With compositing off some apps have a huge black border

[Erick Brunzell]

In Xenial I notice with compositing switched off several apps (nautilus, gedit, totem, gnome-tweak-tool, system-monitor & empathy) have a huge black border as shown in the attached screenshot.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: metacity 1:3.18.1-1ubuntu2
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
Uname: Linux 4.2.0-19-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.2-0ubuntu6
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Sat Nov 14 17:56:19 2015
InstallationDate: Installed on 2015-11-10 (4 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151109)
SourcePackage: metacity
UpgradeStatus: No upgrade log present (probably fresh install)

[Alberts Muktupāvels (muktupavels)]

Do you see this problem when you turn off compositing manager and restart program? All your mentioned programs are CSD windows and I think GTK+ does not support toggling compositing mode - you need to restart program.

If you have same problem after restarting application then problem might be in theme you use. For example it might miss .solid-csd styling that is used when application is used without compositing manager.

In short this is not metacity bug.

[Erick Brunzell (lbsolost)]

Thanks Alberts, I see now that it's OK using the Ambiance theme but borked in Numix so I'll give them time to catch up.

[Silvio Bierman (sbierman)]

This is not only a problem with Numix. Ambiance and Radiance look kind of OK but they have messed up rounded corners. All the other themes I tried have the same huge borders.

Only happens with GTK3 (I think) windows though (Nautilus, Tweak-UI, GEdit).

I do not have compositing turned off as far as I know.

[Silvio Bierman (sbierman)]

Ah Alberts is right: the problem only happens with the terrible CSD windows. Unfortunately in 16.04 Nautilus and GEdit have also become CSD windows.

Libra, Orchis and Ultra-Flat are some thems I tried with the same result. I could live with reverting all CSD windows as a workaround :)