Cannot edit UI since 3.3.0-2805

I see a strange behaviour with editing the user interface since upgraded to latest snapshot

When trying to configure a widget and open drop-down list, the “Configure Widget” entry does not
do anything:

While Edit YAML is still working

Same with trying to add a widget to a cell:

Clicking to the “+” sign and nothing happens

System: Running on Windows 10 pro on Intel NUC with Zulu Java
openjdk version"" 2022-02-08 LTS
OpenJDK Runtime Environment Zulu11.54+25-CA (build
OpenJDK Client VM Zulu11.54+25-CA (build, mixed mode)