Using xvkbd freezes firefox+firetray

[mistotebe]

After the most recent update, my Firefox started freezing whenever I pressed a mouse button. In the end I found out that if I disable FireTray, the freezes no longer happen.

I use "xvkbd xvkbd -no-jump-pointer -text '[Home]'" and others to script some parts of my desktop (mapping mouse buttons to keys) and it seems that just running that command with FireTray enabled is enough to reproduce it.

[mistotebe]

It might be that Thunderbird is affected as well.