[Users] Claws Mail using 100% CPU

[Peter Richards]

version 3.17.4
Kubuntu 19.10

Noticed Claws Mail was connecting to an account via SMTP for several
minutes, waited and it had the same message, and Claws was completely
frozen. Could only go into system monitor and stop the process.

Found a few similar cases

https://lists.claws-mail.org/pipermail/users/2011-December/000679.html

https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=2385

This appears to be related to 'Plugins/Gtkhtml2 Viewer'. The only
plugins I have are AttRemover and LiteHTML Viewer.  Is there an issue
with LiteHTML Viewer ?

When I was able to connect to that account again, the email was of HTML
format.

Regards,

Peter