Unable to PASTE Image when Editing a Comment

[Joanna Berry]

I am not able to save a JIRA Comment when I edit a Comment and paste a clipboard image.

I get the following message: We couldn't save your comment. It might be empty or have invalid formatting. If you copy-pasted, try removing the formatting and adding it directly in the editor.

The same issues applies when I reply to a Comment; it will not save if I paste an image.

Note:
The original Comment was created by me, and already has images in it, so this is unlikely to be "space permission" issue.

[Arkadiusz Wroblewski]

Hello @Joanna Berry 

Yes it unlikely permission issues but Likely with Image you copying Hidden formatting which are Blocker here. 

Also often this Failure message in Confluence are misleading.