since the last stable update (to xfce4-panel 4.12.2-1) the icons in the tray (notification area) don’t draw properly anymore. After boot up, they have a black background and when the icon changes (e.g. networkmanager connects) the new icon is drawn on top of the old one.
I use the xfce desktop with the openbox window manager and no compositing. I noticed, that when I enable compositing (e.g. with compton) the problem is resolved and everything is drawn nicely.
However, I don’t want to use a compositor just for this and up to now it worked flawlessly without one.
Any idea, what changed or what I can do?
Best Regards …