It won't open. See attachments. Reproducible: Always Steps to Reproduce: 1. open 2. 3.
Created attachment 96412 [details] Ask for password
Created attachment 96413 [details] the error
Cannot execute command ''/usr/bin/partitionmanager-bin --dontsu''
Running "kdesudo partitionmanager" from konsole works great!!!
If I remember correctly this bug was already fixed. But Debian hasn't packaged a new version of KDE Partition Manager for many years. It still uses 1.0.x which is 6 years old. This should be resolved once a newer version is uploaded into Debian archive.
What's wrong with debian? Nothing works lately!