xwininfo shows the window is created but not mapped:
xwininfo: Window id: 0x8e082c6 "Add a Storage Volume"
Absolute upper-left X: 708 Absolute upper-left Y: 349 Relative upper-left X: 708 Relative upper-left Y: 349 Width: 500 Height: 320 Depth: 24 Visual: 0x21 Visual Class: TrueColor Border width: 0 Class: InputOutput Colormap: 0x20 (installed) Bit Gravity State: NorthWestGravity Window Gravity State: NorthWestGravity Backing Store State: NotUseful Save Under State: no Map State: IsUnMapped Override Redirect State: no Corners: +708+349 -712+349 -712-411 +708-411 -geometry 500x320+708+349
xwininfo shows the window is created but not mapped:
xwininfo: Window id: 0x8e082c6 "Add a Storage Volume"
Absolute upper-left X: 708
Absolute upper-left Y: 349
Relative upper-left X: 708
Relative upper-left Y: 349
Width: 500
Height: 320
Depth: 24
Visual: 0x21
Visual Class: TrueColor
Border width: 0
Class: InputOutput
Colormap: 0x20 (installed)
Bit Gravity State: NorthWestGravity
Window Gravity State: NorthWestGravity
Backing Store State: NotUseful
Save Under State: no
Map State: IsUnMapped
Override Redirect State: no
Corners: +708+349 -712+349 -712-411 +708-411
-geometry 500x320+708+349