Comment 11 for bug 1788068

Well, let's ask this: does it work with sddm? Because if it does, sddm
ships with Lubuntu, i.e. Lubuntu implies the use of sddm. So, yes, weird
use case, regardless of whether or not it's common for you. I use
awesome with Lubuntu, but that's frankly pretty weird and I'm capable of
admitting as much.

Furthermore, if removing sddm causes the problem using lxqt-panel on
Xubuntu does not cause the problem, then this isn't an lxqt-panel
problem, either. Or did you mean it works fine with their panel? If
that's the case, did you check the versions of lxqt-panel on these other
OSes? If they're the same, something's really strange…