[Windows] Bug in runtime/bin/update.bat file

I am posting this first here on this community to check if I am missing something stupid; but if not then I will open a bug report on GitHub later…

On a Windows system, when I try to run the runtime/bin/update.bat file to upgrade OpenHAB, the script fails with a “Could not find a part of the path” error as shown in the log excerpt below.

The cause is clear: the script tries to create a backup file with a path + name C:\Users\ ... 20210518.055735-52-rrd4j.cfg being 275 characters long, that exceeds the Windows maximum 256 character limit.

Does anyone else encounter this problem? And are there any quick fixes?

REINSTALLING version 3.1.0.RC1

Making a backup of your distribution to C:\Users\XXXXXXXX\AppData\Local\Temp\openhab\backup-3.1.0
Creating backup directories in C:\Users\XXXXXXXX\AppData\Local\Temp\openhab\backup-3.1.0
Copying directory conf, userdata and runtime to C:\Users\XXXXXXXX\AppData\Local\Temp\openhab\backup-3.1.0\conf
#########################################################################################################
#  Could not backup existing distribution to C:\Users\XXXXXXXX\AppData\Local\Temp\openhab\backup-3.1.0  #
#########################################################################################################
PrintAndReturn : Could not find a part of the path 'C:\Users\XXXXXXXX\AppData\Local\Temp\openhab\backup-3.1.0\userdata\tmp\mvn\org\openhab\addons\features\karaf\org.openhab.addons.featu
res.karaf.openhab-addons-external\3.1.0-SNAPSHOT\org.openhab.addons.features.karaf.openhab-addons-external-3.1.0-20210518.055735-52-rrd4j.cfg'.
At C:\Users\AndrewFG\AppData\Local\Temp\openhab\update\runtime\bin\update.ps1:646 char:14
+ ...        exit PrintAndReturn "Could not backup existing distribution to ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : Microsoft.PowerShell.Commands.WriteErrorException,PrintAndReturn