OK. What you could try is that you delete Diodon and then reinstall it again to avoid old desktop files which might not got correctly updated from the upgrade:
sudo apt purge libdiodon0 diodon sudo apt update sudo apt install diodon
Restart your whole computer and see whether it works.
OK. What you could try is that you delete Diodon and then reinstall it again to avoid old desktop files which might not got correctly updated from the upgrade:
sudo apt purge libdiodon0 diodon
sudo apt update
sudo apt install diodon
Restart your whole computer and see whether it works.