Buttons disappeared after recent update

[Ademar440]

As the title says, the preview window buttons are no longer visible, they can only be seen when the window is expanded, otherwise it looks like this

[ruguguru]

Hello same issue, buttons only visible when an email is expanded:

this very useful addon is great.
Thanks a lot,
Rudo

[ItsLifeJim]

Same problem for me. I've switched to larger preview (Show full content, smallest dimensions - 500x500) for now. Firefox 136 running on Ubuntu.

[raymatus]

Same issue for me - buttons are there, but are only 1px or something.

Using Firefox 136.

[inbasic]

See #698 for a temporary solution until the next release is reviewed.