Thank you for your reply!
You’re totally right, I remember now changing the child theme about a year ago. I edited the functions.php in the bricks child theme folder and added the code I found in this thread to add custom image cropping:
So I think you’re right that this might cause the issue, for some reason I’m not able to fix it though. I deleted the code from the child theme and also deleted the child theme altogether but the issue is still there 
I’m using FileZilla to change the files, but it didn’t seem to update deleting the child theme on the Wordpress dashboard so I deleted it on the dashboard aswell.
I didn’t add the CSS in the Theme Styles → Links control like you mentioned btw, just in the functions.php of the child theme.
When I check in the image selection, the custom cropping I added is still there… For some reason I’m not able to remove it. Do you have any suggestions?
