"Could not open/create prefs root node Software\JavaSoft\Prefs" - Windows 10 as regular user

[unsureifpublic@…]

What steps will reproduce the problem?

1. Downloaded josm-tested.jar within the past hour
2. Started normal command window, changed directory to folder with the jar
3. Invoked it with java -jar josm-tested.jar

What is the expected result?

Not to see error messages reported

What happens instead?

See error messages reported - see below

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

Ran it on windows 10 machine (with java 8 u221 both x32 & x64)

Copy & paste of the error message:

2019-11-10 18:38:20.029 WARNING: Could not open/create prefs root node Software\JavaSoft\Prefs at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2019-11-01 23:59:01 +0100 (Fri, 01 Nov 2019)
Build-Date:2019-11-01 22:59:57
Revision:15492
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15492 en) Windows 10 64-Bit
OS Build number: Windows 10 Home 1809 (17763)
Memory Usage: 302 MB / 2229 MB (168 MB allocated, but free)
Java version: 1.8.0_221-b11, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: \Display0 1600x900, \Display1 1920x1080
Maximum Screen Size: 1920x1080

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.
- W: Region [TMS_BLOCK_v2] Resetting cache

[anonymous]

This error makes me wonder if the program is trying to write to HKEY_LOCAL_MACHINE, which is naturally going to fail when run as a regular (non-administrative) user?