Hello,

If I insert existing attachment from File Downloads which was a video, then I could not delete the video in the editor no matter what I did.

Thanks.

Please could you let me know the type of video, along with which operating system and browser you are running?

The video is in a format of .mp4, the OS is Windows 11 and the browser is Microsoft Edge.

Thank you for bringing this issue to our attention! I can confirm this should be further reviewed and I have logged an internal bug report for our development team to investigate and address as necessary, in a future maintenance release.