picture preview disappears when adjusting time

[trekki <bergenholtz@…>]

version
=======
Repository Root: ​http://josm.openstreetmap.de/svn
Build-Date: 2011-03-21 02:31:30
Last Changed Author: mjulius
Revision: 3998
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: ​http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2011-03-20 23:26:22 +0100 (Sun, 20 Mar 2011)
Last Changed Rev: 3998

current behavior
================
when selecting the georeferenced pictures / "mit gpx korrelieren / manuell justieren the preview pictures in the main josm window are switched off.

expected behavior
=================
the preview pictures should move along the gpx trac accoring to the selected time adjustment.

Problem
=======
without this moveing preview it is not possible to adjust the time

[trekki <bergenholtz@…>]

problem description is wrong: the disappearing photos is because a bad selection of the default gpx track. In my case i have loaded one own track and some data from the public track database. This public track is invisible (selected invisible by me). When adjusting the picture timestamp the default selection is the public track.
==> Enhancement: dont default to the invisible track. Default to a visible track

the list of possible gps tracks lists each track double. see appended hardcopy
==> error correction: only list each track once

[Don-vip]

In 13056/josm:

fix #6135 - Correlate GPX with image: fix incorrect drop-down list initialization after using "try again" button + smarter selection of initial GPX track