Verification skips images

[JonaGanz]

Hello Christian,

I think I found a small bug in the annotations verification. Sometimes when I click verify on an image to complete my annotation, it is not saved. If I then select only unverified images to display, those which I have previously verified are also displayed. Also, some images are displayed as both verified and unverified. The error occurs on images where no objects have been annotated. However, not all images on which no objects are annotated are overlooked.

Kind regards
Jonathan