Jira appears to save a simple video when uploaded as a comment "empty or invalid formatting"

[Issac Osis]

It uploads and previews it...

{"body":{"version":1,"type":"doc","content":[{"type":"mediaSingle","attrs":{"width":659,"layout":"align-start","widthType":"pixel"},"content":[{"type":"media","attrs":{"type":"file","id":"79b5806a-4f3b-40e1-9677-b304359de1d8","alt":"Screen Recording 2025-09-17 at 1.27.37 pm.mov","collection":"upload-user-collection-3738958","height":1514,"width":2660}}]}]},"visibility":null}


"errorMessages": [
"ATTACHMENT_VALIDATION_ERROR"
],
"errors": {
"comment": "ATTACHMENT_VALIDATION_ERROR"
}

[Matthias Gaiser _K15t_ · Accepted solution]

Hey @Issac Osis

can you describe in a bit more detail what you're doing?
It seems like you're adding a comment and inside the comment you want to add an attachment is this correct?

I have some questions to better troubleshoot the problem:

• Does it work to directly add the attachment to the work item? Without a comment?
• Which types of projects do you use? JSM or Jira? Team-managed vs. company-managed?
• It seems like the video is from a screen recording. Can you do another recording and try if that video uploads successfully?
• If you can share a sample video (without confidential data), others might be able to check if it's also not working for them - and possibly provide a solution.

Hope that helps,
Matthias.

[Issac Osis]

Empty comment, drag video into comment, animation plays showing upload, video shows in comment after faked upload success animation, comment displays retry.

[Issac Osis]

probably another error message about content being too large shown somewhere and buried by the comment save failure message.
[video removed]
the annoying part is the UI makes it look like it worked and was uploaded somewhere

[Matthias Gaiser _K15t_]

I understand the frustration - and thanks for providing more details.

Unfortunately, I can't access the youtube-Link and using a fileshare platform might be better suited, otherwise the video format might be different.

Do you also have more information regarding my other questions?

• Does it work to directly add the attachment to the work item? Without a comment?

• Which types of projects do you use? JSM or Jira? Team-managed vs. company-managed?

• It seems like the video is from a screen recording. Can you do another recording and try if that video uploads successfully?

[Issac Osis]

The "notification" style errors will hide the actual error leaving the most recent error visible which has nothing to do with the underlying error.

This is the repost of the above.

https://www.youtube.com/watch?v=aNNJS9rLWF0

[Issac Osis]

https://www.youtube.com/watch?v=GRCn5fp2fq8 

what you can see when you upload the comment onto an existing ticket

[Issac Osis]

so the bug is : 
1. when uploading a video to a comment it appears to work until you go and save (and retry)
2. when you upload to a fresh ticket it doubly appears to work (shows attachment and video) but does correctly show an error message about file size quickly followed by an error message as in the video above.

[Issac Osis]