JOSM hangs when trying to move a node in extrude mode

[aseerel4c26]

What steps will reproduce the problem?

0. download some data (e.g. around that node ​https://www.openstreetmap.org/node/1281460440 )
1. select a node (e.g. this node ​https://www.openstreetmap.org/node/1281460440 )
2. press X
3. hold ctrl and move the node with the mouse button pressed ( https://josm.openstreetmap.de/wiki/Help/Action/Extrude#MoveanodealongadjacentsegmentCtrl )

What is the expected result?

node moves along segment

What happens instead?

100% cpu usage (a single core only), no further reaction of JOSM until I killed it after around 15 seconds

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

• I started with a deleted config folder
• also happens with the latest tested version

Config:

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2017-11-15 20:09:06 +0100 (Wed, 15 Nov 2017)
Revision:13124
Build-Date:2017-11-16 02:31:57
URL:http://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (13124 de) Linux
Memory Usage: 302 MB / 2048 MB (223 MB allocated, but free)
Java version: 9+181, Oracle Corporation, OpenJDK 64-Bit Server VM
VM arguments: [-Dawt.useSystemAAFontSettings=on, -Dswing.aatext=true]

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.

[Don-vip]

looks like #15535. So maybe not macOS specific

[aseerel4c26]

thanks, indeed. That seems to be the same issue for me.

Are you still not able to reproduce? Can I help you in some way?

[Don-vip]

Closed as duplicate of #15535.
OK reproduced with Java 9. Thank you for the detailed steps.

[aseerel4c26]

great, thanks for your fix and work on it. I cannot reproduce it anymore with r13136. :-)