Disconnect node from way: incorrect message and option to disconnect from more than one way at once

[skyper]

What steps will reproduce the problem?

1. Have two overlapping ways and another way all parent of a node.
2. Select the node and the two overlapping ways
3. disconnect from way

What is the expected result?

The node loses childhood of the selected ways

What happens instead?

Nothing but a message: There is more than one way using the node. Please select the way also.

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

The message is the defect. Disconnecting from more than one way at once is probably an enhancement.

URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2016-09-11 23:44:47 +0200 (Sun, 11 Sep 2016)
Build-Date:2016-09-12 01:38:39
Revision:10994
Relative:URL: ^/trunk

Identification: JOSM/1.5 (10994 en) Linux Debian GNU/Linux 8.5 (jessie)
Memory Usage: 513 MB / 882 MB (203 MB allocated, but free)
Java version: 1.8.0_102-8u102-b14.1-1~bpo8+1-b14, Oracle Corporation, OpenJDK 64-Bit Server VM
Java package: openjdk-8-jre:amd64-8u102-b14.1-1~bpo8+1
Java ATK Wrapper package: libatk-wrapper-java:all-0.33.3-9
VM arguments: [-Djosm.home=<josm.pref>]
Program arguments: [--language=en]
Dataset consistency test: No problems found

Plugins:
+ utilsplugin2 (32815)

Last errors/warnings:
- 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'