Bochs 2.6.8 the "Display"-window should vanish immediately when "Kill simulation" is pressed, but it remains as a zombie until right-click to taskbar

ros 0.4.8-RC-14-g10b06f1 gcc dbg.
Bochs 2.6.8 from rapps.

Bochs improved massively lately, but there is still a minor glitch left.
(This is a follow-up-ticket of the two resolved tickets CORE-13628 & CORE-13629)

Bochs has 2 main Windows: the "console"-window and the "Display"-window.
The "Display window" has a speciality that it may be covered by a modal messagebox when the emulator "Panics".

Reproduction steps:
-Open Bochs
-and start a simulation without configuring anything
-The simulation will give a modal "Panic box" soon (that is modal to the "Display window")

Expected result:
-As soon as you click "Kill simulation" in the panic box, the "Display"-window should vanish immediately

Observed result:
-The "Display"-window does not vanish immediately but is deactivated and is in a "zombie"-state where it can not longer be activated by clicking to it.
-It will automatically close as soon as you right-click the "Display"-windows tile in taskbar though (without selecting anything). It's as if WIN32SS realizes then that the Window does not really exist anymore.

I am pretty sure it is related to the modality of the panic box somehow.

0.4.8-RC-14-g10b06f1.webm
0.4.8-RC-14-g10b06f1.log

jimtabor noted before that this misbehavior maybe timing dependant, however I can make it happen reliably here on VBox4.3.40.