Waypoint labelling "None" doesn't work

[anonymous]

What steps will reproduce the problem?

1. Go to Preferences, select "Expert mode"
2. Go to Display Settings and GPS Points
3. Select Waypoint labelling to "None" or "Custom" but leave TextField empty
4. Save
5. Go to Preferences, Display Settings and GPS Points

What is the expected result?

Waypoint Labelling is set to "None" or empty Custom

What happens instead?

Waypoint Labelling is reset to Default (Auto)

Please provide any additional information below. Attach a screenshot if possible.

I just have a short look at the code.
I located to ../preferences/display/GPXSettingsPanel.java:390
and ../layer/markerlayer/Marker.java:116

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2016-09-06 00:16:07 +0200 (Tue, 06 Sep 2016)
Build-Date:2016-09-05 22:21:00
Revision:10966
Relative:URL: ^/trunk

Identification: JOSM/1.5 (10966 de) Windows 8.1 64-Bit
Memory Usage: 424 MB / 910 MB (284 MB allocated, but free)
Java version: 1.8.0_91-b14, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM

Plugins:
+ turnrestrictions (32796)

Last errors/warnings:
- W: Unable to get color from '' for color preference 'make.parallel.helper.line'
- W: Unable to get color from '' for color preference 'extrude.main.line'
- W: Unable to get color from '' for color preference 'improve.way.accuracy.helper.line'
- W: Unable to get color from '' for color preference 'make.parallel.helper.line'
- W: Unable to get color from '' for color preference 'extrude.main.line'
- W: Unable to get color from '' for color preference 'improve.way.accuracy.helper.line'
- W: Unable to get color from '' for color preference 'make.parallel.helper.line'
- W: Unable to get color from '' for color preference 'extrude.main.line'
- W: Unable to get color from '' for color preference 'improve.way.accuracy.helper.line'
- W: Unable to get color from '' for color preference 'make.parallel.helper.line'

[simon04]

In 11039/josm:

fix #13574 - Waypoint labelling "None" doesn't work

Store space character since Preferences#put(java.lang.String, java.lang.String) ignores empty strings.

[simon04]

Milestone renamed