wxWindow::Refresh() doesn't repaint items under Wayland when called from wxEVT_IDLE handler

[vadz]

I'll try to come up with a SSCCE later, but for now I'm opening this just to check if anybody has already run into this by chance and/or has any ideas:

Calling wxListCtrl::RefreshLines() doesn't have the expected effect when it's called from OnIdle(), i.e. it doesn't repaint the affected items. This only happens when using Wayland, not X11, and can be worked around by using CallAfter() which is weird because it's still called during the idle time -- but somehow doing it during the next idle callback call works. This doesn't seem to be wxListCtrl-specific, I just don't see any calls to GTKSendPaintEvents() after calling gdk_window_invalidate_rect() in this case.

[vadz]

I was wrong in my initial bug description, the paint events do get generated and processed but, somehow, drawing on wxPaintDC doesn't update what is shown on screen. This is a bit crazy, especially because I can't reproduce it in a simple example, but it does happen in my application. Calling CallAfter([this]() { Refresh(); }) instead of calling Refresh() directly in the idle handler fixes it, so I'll use this as a workaround for now but I'd like to understand what is really going on here and why could wxPaintDC possibly decide not to update the screen like this...