One word repeats forever without any progress (puzzle choise words)

Memrise Bug Control Web Bugs
1

https://www.memrise.com/course/44392/zertifikat-deutsch-wortliste/1/garden/learn/?source_element=level_details_session&source_screen=level_details

the word - die Abfahrt

Also I noticed the same issue in other tests

2

It happens only with puzzle choise words (and phrases)

Now I have to skip them