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Bug 256282

Summary:	Debugger Variables Window loses content when redocking it to different part of screen
Product:	platform	Reporter:	ytn01
Component:	Window System	Assignee:	Stanislav Aubrecht <saubrecht>
Status:	STARTED ---
Severity:	normal	CC:	mentlicher
Priority:	P3
Version:	8.1
Hardware:	PC
OS:	Windows 7
Issue Type:	DEFECT	Exception Reporter:
Attachments:	Bug in action - video

Description ytn01 2015-10-30 20:26:34 UTC

Product Version = NetBeans IDE 8.1 (Build 201510222201)
Operating System = Windows 7 version 6.1 running on amd64
Java; VM; Vendor = 1.8.0_72-ea
Runtime = Java HotSpot(TM) 64-Bit Server VM 25.72-b04

Reproducibility: Happens every time

Demo included on the attached screencast video

STEPS: (Shown on attached video)
 * Open debugger variable window and dock it on the top left side of IDE window
 * then close the debugger variables window
 * Set a breakpoint in a project and launch debug run on it
 * when breakpoint hits, open the debugger variables window again
 * now move the variables window to dock it at bottom center screen

ACTUAL:
  * once docked,.. notice variables window loses it's content
  * after stepping some expressions via debugger,... closing the variables window won't respond either

EXPECTED:
  message pops u

Comment 1 ytn01 2015-10-30 20:28:31 UTC

Created attachment 157071 [details]
Bug in action - video

Comment 2 Martin Entlicher 2015-11-03 15:50:21 UTC

Thanks for the video.
I've reproduced it.

Comment 3 Martin Entlicher 2015-11-03 16:03:06 UTC

This must be a defect of the Window System.
I get only org.netbeans.modules.debugger.ui.views.View.componentHidden() call without any subsequent componentShowing().