I use both. Your betas are stable enough for production and have always been. I don't know what method you are using keeping the source code stable and not messed up, the father of all bugs , but it's a winning concept.
It must be the file-service not supporting thumbnail generation or something. Onedrive works. I'll take a closer look on my server and see if I can do something or use samba through some other component that generates thumbnails.
Thanks for the answer. It means a lot getting feedback. I'll post here if I find something that could help others with the same problem.