Layout in Album edit view

Hello Jacob,
First of all thanks for this great plugin!
I have this issue when editing an album. As you can see in the image, the first four photos have the correct placement, all others are placed too far to the left. So they are only visible when clicking “Menu invouwen”, collapse menu.
This only occurs when there are photos in different albums.
So let’s say foto xxx is in the user’s album and also copied to an album containing the “photo of the month”. When logged in as this user (=owner) you see all photos in all albums.

I tried several (standard) WP themes, but it is always the same. Tried several options in the settings, layout and so on, but to no avail.

Do you have any idea what can cause this?
Thank you in advance!

Best regards,
Kees