Bing background images very blurry when JOSM is started from Eclipse

[GerdP]

What steps will reproduce the problem?

1. Start JOSM with the default configuration "JOSM (Java 8)"
2. Clear the cache for Bing sat images
3. Download node n5997394385 with referrers (id doesn't really matter, I created my screenshots for this)
4. Zoom to 5 m
5. Add imagery layer "Bing aerial imagery", note that it is very blurry
6. Right click on image and select "Flush tile cache", note that image is much more detailed now

What is the expected result?

Hi details in step 5

What happens instead?

Have to flush the tile cache

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

Blurry image shows "No attribution is loaded yet"
I cannot reproduce the problem when I start JOSM from the command line with the args given in configuration "JOSM (Java 8)"

Build-Date:2019-03-11 08:41:35
Revision:14877
Is-Local-Build:true

Identification: JOSM/1.5 (14877 SVN en) Windows 10 64-Bit
OS Build number: Windows 10 Home 1803 (17134)
Memory Usage: 558 MB / 1753 MB (144 MB allocated, but free)
Java version: 1.8.0_191-b12, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-ea, -Dfile.encoding=UTF-8]
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (34867)
+ apache-commons (34506)
+ buildings_tools (34904)
+ continuosDownload (82)
+ download_along (34869)
+ ejml (34389)
+ geotools (34513)
+ jaxb (34678)
+ jts (34524)
+ o5m (34867)
+ opendata (34911)
+ pbf (34867)
+ poly (34867)
+ reltoolbox (34867)
+ reverter (34867)
+ undelete (34883)
+ utilsplugin2 (34915)

Last errors/warnings:
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet

[GerdP]

Screenshots
Step 5:
Step 6: