Red squares glitch

[Davide Aguiari]

I've installed Plank 0.9.0 via experimental Debian Jessie reps.
Under my active icons, there's an annoying red square close to the red 'led'.

You can see that in my screenshot.
It happens with every themes.

Plank's version: 0.9.0
Debian 8 Jessie
Gnome-shell

[Rico Tzschichholz (ricotz)]

I assume you are running an Intel Graphics Hardware.
This is a graphics driver issue.

[Davide Aguiari (gorghino)]

I've a Nvidia 860M & an Intel graphics card.
I installed bumblebee following (this guide)[http://unix.stackexchange.com/questions/175352/red-glitch-borders-on-linux-desktop-animations] without success.

[Rico Tzschichholz (ricotz)]

I see, so this is not a plank specific issue and therefore invalid here, sorry.

[Vitaliy (biznika)]

I'm joining with this bug.
Have see it on different distributions. mostly on Debian.

Tried to open Plank from Terminal, see critical error like <<[CRITICAL 23:19:56.603649] [PositionManager:797] Without a draw_value there is trouble ahead for 'gThumb'>> for each running application.

Fairness, Docky has the same situation.

Screenshot: http://s017.radikal.ru/i429/1508/5e/1de26eea5354.png
OS: Debian 8.1
Kernel: Linux home 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u3 (2015-08-04) x86_64 GNU/Linux