Can not open GPX file containing only waypoints

[BearT]

I've converted a list of a view points from csv to gpx using GPSBabel. When opening the file in JOSM no new GPX layer is created and I can't see any points. There is no error message, neither in the GUI nor on the command line when opening JOSM from a terminal. The terminal output at least says JOSM is doing something, giving the following message:
Open file: /some/path/allPoints.gpx (5242 bytes)

Opening the same file in Merkaartor shows all points as expected, so from that and manual inspection of the file I'd say the gpx file is correct (file is attached).

I was wondering if this really is a bug or if I'm just too stupid to use JOSM correctly.

All tests were made with r5273 (latest).

[BearT]

The file that I'm trying to open.

[BearT]

Screenshot from Merkaartor (with background image) to roughly illustrate the expected result.