Bug with html mails and is it possible to remove signatures in replies?


first, i’m using a dark theme. Some of my senders are using html with white background and black text.
Sometimes i can see it the way it should be.
Other times i only see it als plain text - yes, it’s html and from the same sender.
Or the Background is missing and i see black text on my dark background - also the same sender.

The same problems are on replies.
It makes reading impossible

Is it possible to remove signatures on replies and only set only one above or beyond the replied text?
I know this works in Thunderbird but i’m not sure it’s from an addon.
I’ve been hitting the max length error quite some times and i’ve never seen this in V7