The menu Help->Check for Update is not working (at least on Ubuntu 22):
Help->Check for Update
The menu Help -> Open docs in external browser open the following URL https://apps.jcns.fz-juelich.de/steca which does not exist
Help -> Open docs in external browser
https://apps.jcns.fz-juelich.de/steca
This broken URL is also used in the about dialog