Bug 372796

Monitor setup:
Secondary monitor || Primary Monitor

When moving a window from the primary to the secondary monitor, the window will just disappear, it seems like it is placed under the secondary monitor out of the screen coordinates. To bring the window back I have to select "move" in the Task Manager, which allows me to place the window on the second screen properly, until I reposition it again by dragging it as usual which makes it disappear again.

Here is the xwininfo output where the windows should be at the same location (+-5px):

Windows visible:

  Absolute upper-left X:  0
  Absolute upper-left Y:  393
  Relative upper-left X:  0
  Relative upper-left Y:  0
  Width: 1133
  Height: 807
  Depth: 24
  Visual: 0x27
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x5c00004 (not installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsViewable
  Override Redirect State: no
  Corners:  +0+393  -2707+393  -2707-0  +0-0
  -geometry 1133x807+0-0


Window invisible:

  Absolute upper-left X:  0
  Absolute upper-left Y:  1228
  Relative upper-left X:  0
  Relative upper-left Y:  0
  Width: 1133
  Height: 807
  Depth: 24
  Visual: 0x27
  Visual Class: TrueColor
  Border width: 0
  Class: InputOutput
  Colormap: 0x5c00004 (not installed)
  Bit Gravity State: NorthWestGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsViewable
  Override Redirect State: no
  Corners:  +0+1228  -2707+1228  -2707--835  +0--835
  -geometry 1133x807+0+1228