Plugin layer does not get removed permanently

[osm@…]

What steps will reproduce the problem?

1. Activeate the OpenStreetCam plugin and add the OpenStreetCam layer via Imagery m.enu.
2. Select the OpenStreetCam layer and press the recycle bin icon in the Layers pane
3. Close and restart JOSM.

What is the expected result?

OpenStreetCam should have been removed from the Layers persistently.

What happens instead?

OpenStreetCam re-appears in the Layers pane.

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

The OSC plugin remembers if the layer was loaded the last time JOSM ran. If the layer is removed via right klick - delete it is removed persistently. Only when using the delete button the removable is only temporary.

OSM plugin developers ​claim it is a JOSM core issue no one of the plugin.

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2019-03-03 00:16:03 +0100 (Sun, 03 Mar 2019)
Build-Date:2019-03-02 23:16:53
Revision:14824
Relative:URL: ^/trunk

Identification: JOSM/1.5 (14824 en) Windows 7 64-Bit
OS Build number: Windows 7 Enterprise (7601)
Memory Usage: 749 MB / 1799 MB (400 MB allocated, but free)
Java version: 1.8.0_202-b08, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
Dataset consistency test: No problems found

Plugins:
+ HouseNumberTaggingTool (34867)
+ Mapillary (1.5.18)
+ OpenStreetCam (217)
+ PicLayer (34867)
+ apache-commons (34506)
+ apache-http (34632)
+ buildings_tools (34904)
+ changeset-viewer (22)
+ ejml (34389)
+ geotools (34513)
+ jna (34867)
+ jts (34524)
+ log4j (34527)
+ reverter (34922)
+ tageditor (34867)
+ turnlanes-tagging (280)
+ turnrestrictions (34867)
+ utilsplugin2 (34915)
+ wikipedia (v1.1.1)

Tagging presets:
+ <josm.pref>\presets\josm_preset.xml

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

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

[jBeata]

We had investigated this issue a while ago (6-9 months ago), but we came to the conclusion that no fix can be done at our side since JOSM we can't override some classes associated with the Delete button. Nevertheless, we will investigate the issue again to see if we can find any other solution.

@Don-vip: Do you have any recommendation regarding this issue? Or is there any documentation available?

[Don-vip]

Can you please share the analysis? In particular, which classes do you talk about?

[InsertUser]

This issue is also showing up in the layers created by the Improve OSM plugin.

[skyper]

Imagery layers do not show up after deleting, they are even not remembered. Why can the plugin not simply be inactive until the layer is manually opened ? Use session to remember the layers and their states.