After 3.2 update no more thumbnails in clients albums overview

Hey there,
I would need your help after update to 3.2.
In the client’s album overview the thumbnails are no more displayed.
I’ve check and the image address seems to be wrong… it says:

https://sven-michael.com/workspace/backlight//workspace/galleries/....jpg

instead of

https://sven-michael.com/workspace/galleries/...jpg

Any ideas how I can fix this?
Many thanks in advance
Sven M

Ben and Matt might need more information. Are these Client Response managed albums?
If so, are your clients signing in at: https://sven-michael.com/workspace/backlight/clients

We’ll need a client login to see anything useful.