I drag-and-drop images from the web to Boostnotes. They are inserted correctly, no problem. After closing and reopening boostnotes, this happens:

The images disappear
Please include some screenshots with the developer tools open (console tab) when you report a bug.
Folder is set to a directory in iCloud.
Does this note contain more than 5 images by any chance?
no
Could try un-ticking this setting in Preferences->Interface (about halfway down):

Please let us know whether that helps at all or not.
Gave it a shot.
I'll ping you if it occurs again.
I have had the exact same issue on Windows 10 for quite a while. I paste the image in the note and it shows. However, when I change to another note and them back to the original one the image has disappeared. The attachment folder still exists, however the image is no longer there.
I will also change the setting to see if it makes a difference for me.




For now this fix seems sufficient. I'll close this issue.
If you do have this problem AFTER applying the above fix, then leave a comment here and we'll reopen this issue.
Most helpful comment
Could try un-ticking this setting in Preferences->Interface (about halfway down):

Please let us know whether that helps at all or not.