cannot copy from the object history view

[dieterdreist]

What steps will reproduce the problem?

1. open object history (ctrl+h)
2. try to select a tag

What is the expected result?

selects a column in a version (value or key) and lets you copy the content.

What happens instead?

cannot copy, can only select a row (key+value) and when I copy and paste, I only get the value twice, e.g.:
name name

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

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2016-06-24 01:49:51 +0200 (Fri, 24 Jun 2016)
Build-Date:2016-06-24 01:34:30
Revision:10473
Relative:URL: ^/trunk

Identification: JOSM/1.5 (10473 en) Mac OS X 10.11.5
Memory Usage: 825 MB / 1820 MB (405 MB allocated, but free)
Java version: 1.8.0_66-b17, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
VM arguments: [-Dsun.java2d.opengl=true]
Dataset consistency test: No problems found

Plugins:
- TombPlugin (46)
- alignways (32161)
- apache-commons (32158)
- apache-http (32158)
- buildings_tools (32158)
- ejml (32158)
- geochat (32158)
- geotools (31895)
- imagery_offset_db (32158)
- jts (31906)
- opendata (32289)
- print (32191)
- proj4j (32158)
- reltoolbox (32158)
- reverter (32158)
- undelete (32158)
- utilsplugin2 (32158)

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/MaxspeedIcons&zip=1

Last errors/warnings:
- W: Old style SideButton usage for action org.openstreetmap.josm.gui.history.HistoryBrowserDialog$CloseAction@64445f57
- W: Old style SideButton usage for action org.openstreetmap.josm.gui.help.ContextSensitiveHelpAction@722ed8e2
- W: Old style SideButton usage for action org.openstreetmap.josm.gui.history.HistoryBrowserDialog$ReloadAction@4d93784c
- W: Old style SideButton usage for action org.openstreetmap.josm.gui.history.HistoryBrowserDialog$CloseAction@6294dfdd
- W: Old style SideButton usage for action org.openstreetmap.josm.gui.help.ContextSensitiveHelpAction@575ff309