Unexpected result from element of (∉) with unclosed ways

[GerdP]

What steps will reproduce the problem?

2. Open Search dialog in expert mode and select "MapCSS selector"
3. Enter

   *[highway] ∈ area[building]
   

What is the expected result?

The three examples all have a highway within a building. I think it would be good when JOSM would find all three buildings.

What happens instead?

The building in the middle is selected.

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

The problem is in the java code: The selectors don't detect that they use "polygon" methods with unclosed ways and the "polygon" methods simply draw a line from the last point to the first and thus create a closed way before calculating the results.
In r15031 this is also true for unclosed ways matching the right selectors.
In r15102 the problem only exists for the left selectors.

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2019-04-28 04:36:41 +0200 (Sun, 28 Apr 2019)
Build-Date:2019-04-28 02:37:58
Revision:15031
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15031 en) Windows 10 64-Bit
OS Build number: Windows 10 Home 1803 (17134)
Memory Usage: 558 MB / 1820 MB (337 MB allocated, but free)
Java version: 1.8.0_201-b09, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-XX:StartFlightRecording=name=MyRecording2,settings=d:\dbg\gerd.jfc, -XX:FlightRecorderOptions=defaultrecording=true,dumponexit=true,dumponexitpath=e:\ld\perf_20190523_061454.jfr]
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (34977)
+ apache-commons (34908)
+ buildings_tools (34982)
+ continuosDownload (82)
+ ejml (34908)
+ geotools (34908)
+ jaxb (34908)
+ jts (34908)
+ o5m (34908)
+ opendata (34997)
+ pbf (34908)
+ poly (34991)
+ reverter (34999)
+ undelete (34977)
+ utilsplugin2 (34977)

Validator rules:
+ c:\josm\core\data\validator\geometry.mapcss

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