regression: after selection through relation manager - no zoom to selection

[skyper]

I do not know when this regression was introduced but it used to work.

1. open the relation dialogue and add a member object to the selection list.
2. object is selected and in the selection toggle dialogue listed
3. Move mouse out of the relation dialogue and hit "3" (zoom to selection)

no zoom ! only after selecting the objects again through selection toggle dialogue I am able to zoom.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2012-09-14 01:31:04
Last Changed Author: stoecker
Revision: 5511
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2012-09-13 19:51:48 +0200 (Thu, 13 Sep 2012)
Last Changed Rev: 5511

Identification: JOSM/1.5 (5511 de)
Memory Usage: 271 MB / 643 MB (131 MB allocated, but free)
Java version: 1.6.0_24, Sun Microsystems Inc., OpenJDK 64-Bit Server VM
Operating system: Linux
Dataset consistency test: No problems found

Plugin: reverter (28656)
Plugin: undelete (28541)

[skyper]

I have tested a bit more and it seems to be a problem with the focus as zooming works after getting the focus to the map window by clicking on its header or moving the map and I can reproduce the same behaviour when only switch focus between relation editor with a click on a member and main window.
Could be also a broken java or window manager.

Gnome 3 on debian wheezy.

Same issue with java 7.