id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
16351	crash JOSM	ALPZz	ALPZz	"==== What steps will reproduce the problem?
1. selecting a building=yes within task square
2. selecting a building=construction overlapping square
3. joining two buildings

==== What is the expected result?
selection of different values as one
==== What happens instead?
JOSM crashes
==== Please provide any additional information below. Attach a screenshot if possible.
even if building=construction is changed to building=yes it still crashes maybe the changeset needs to be saved then joined?
{{{
URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-05-31 00:51:20 +0200 (Thu, 31 May 2018)
Build-Date:2018-05-30 22:58:01
Revision:13878
Relative:URL: ^/trunk

Identification: JOSM/1.5 (13878 en_GB) Windows 10 64-Bit
OS Build number: Windows 10 Home 1803 (17134)
Memory Usage: 219 MB / 247 MB (46 MB allocated, but free)
Java version: 1.8.0_171-b11, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-Djava.security.manager, -Djava.security.policy=file:<java.home>\lib\security\javaws.policy, -DtrustProxy=true, -Djnlpx.home=<java.home>\bin, -Djnlpx.origFilenameArg=%UserProfile%\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\56\1ee8cfb8-4f2324aa, -Djnlpx.remove=false, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.splashport=51937, -Djnlp.application.href=https://josm.openstreetmap.de/download/josm.jnlp, -Djnlpx.jvm=<java.home>\bin\javaw.exe]
Dataset consistency test: No problems found

Plugins:
+ Create_grid_of_ways (34109)
+ HouseNumberTaggingTool (34109)
+ ImproveWay (17)
+ Mapillary (v1.5.14+post13733)
+ alignways (34109)
+ apache-commons (34109)
+ apache-http (34109)
+ buildings_tools (34212)
+ changeset-viewer (15)
+ contourmerge (1032)
+ geojson (80)
+ imagery_offset_db (34209)
+ junctionchecking (34109)
+ mapathoner (0.2.4)
+ merge-overlap (34109)
+ terracer (34109)
+ turnrestrictions (34129)
+ utilsplugin2 (34221)

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.
- E: Region [TMS_BLOCK_v2] Failure getting from disk--IOException, key = Tasking Manager Imagery - #4429:https://tiles.openaerialmap.org/5ac65a9f91b5310010e0d489/0/5ac65a9f91b5310010e0d48a/{z}/{x}/{y}.png/21/627709/937858
- W: Region [TMS_BLOCK_v2] Resetting cache
}}}
"	defect	closed	normal		Core	latest	needinfo	template_report