Sending an email with Roundcube on mail.zxcs.nl doesn’t work, but it does in other browsers. It will keep loading forever. (Bottom right corner) I disabled the shields and Ublock. It also doesn’t work in a private window.
Expected result:
The email sends
Version 1.31.91 Chromium: 95.0.4638.69 (Official Build) (64-bit)
Thank you for these steps.
If I disable them all it works so I disabled them one by one to see which one causes the problem. Turns out it’s my Dark Mode extension (link below). This causes the mail to not send.