Can't edit "Project Description for Thumbnail" in Firefox

[serum]

Hello

When using Firefox I can't edit the project description in the field "Project Description for Thumbnail". It always switches back to the old one I entered some time before. In Chrome it works. (Firefox Quantum 61.0.1)

Bye

[serum]

I made a screen capture video of the problem and uploaded it on vimeo.
https://vimeo.com/279976360

Does anyone else have this problem?

[mariusjopen]

Dear @serum
thank you for sharing.
This looks a little familiar.

Best is if you write an email to marius@thepeople.world and include your username, password and a link to this conversation.

Marius