Hey Koen,
please check if respective project has its format set to “image” in the “Format” settings box on the right hand side of the edit mode screen. In case it does not help, please let me know the URL of the webpage in question (or you can send it to me via support@satoristudio.net) – I’ll be able to provide a more specific piece of advice if I see the actual code. Thanks!
Sincerely,
Andrii / Satori Studio