Created attachment 7078 [details] video showing this issue Hello. I'm using Whisker Menu 2.1.2 on Xubuntu 17.04 with xfce4-panel 4.12.1 My issue is that Whisker Menu button loses its highlight when I move cursor on the screen edges. I've tested it when the panel was pinned to the top (default in Xubuntu) and to the bottom with 100% length and on fresh user account. It seems that WM should be the first item on the panel to see this issue appear. No matter if it's displayed as an icon or a text. When the highlight is lost clicking on the button is not bringing the menu up. It just makes the highlight appear, nothing more. I recorded my screen to explain this issue better (I will attach the file also): https://drive.google.com/open?id=0B8qh4-wxxEZ7ckpic29mdUEyWW8
Created attachment 7079 [details] video showing this issue (ZIP)
I Can confirm this seems to affect installs on Hardware rather than VM's.
This is not a bug in Whisker Menu, as I can recreate this with other plugins (such as the PulseAudio plugin and the DateTime plugin). I also can only recreate it with GTK3 plugins, and for me they do not need to be the first item on the panel. It is most likely a bug in the panel.
This may not be related, but I think I should mention it. I can observe very similar behaviour with Plank docked to the left side of my screen, as seen here - https://drive.google.com/open?id=0B8qh4-wxxEZ7b3ZTZ0stb1VvdGM So maybe not only xfce4-panel is affected by this bug, but all docked (GTK3) windows/objects?