I'm having issues with Kmail and Dolphin's Send via Email.

Kubuntu 19.10+Kubuntu PPA backports enabled.

Latest updates installed.

"Send via Email" doesn't do anything most of the time.

I see Kmail "opening" at the bottom taskbar, and there is a circle flashing, but then Kmail just disappears and nothing happens.

If I launch Kmail manually and then use "Send via Email" it always works fine. Another Kmail window pops up and you can enter there all the necessary information and then send email.

Has anyone else experienced this bug?

How can I troubleshoot it?

inxi output https://pastebin.com/rJTCbXR3

Kind regards,