#735 endless flickering with certain signed emails

[Andriy Gapon]

When opening certain email message in the message pane I see continuous endless flickering as if the email is being re-rendered over and over.
The effect does not happen if I disbale Enigmail.

I am attching a log from enigmail that I took after the flickering.
A short video recording of what I see is here here

I am also attaching the raw source of the email.

[Andriy Gapon]

The email's source.

[Patrick Brunschwig]

That's already fixed on master.
Duplicate to Bug [#734]