Position and visibility issues in some WM

[redtide]

Was reported as working under XFCE but it seems there are some issues in WMs like Openbox (LXQt here):

• Position: sometimes closing the window in any position it's saved at x0, y0, this can be seen when moving the mouse near the window edge, normally the app icon is drawn on it to avoid the "mirror on mirror" effect, it works when moving in the top left screen area
• Visibility: impossible to restore/view the window using multiple desktop screens/workspaces:
  • while the window is shown, move to another workspace
  • hide the window
  • back to the original where the window was and try to show it again

To be managed manually via code.