Hi, I suspect this is a bug. I am able to assign a category to a movie by going into the movie's Edit page and there selecting the category.
However, when I am looking at a list of movies (in a library view) this does not work. I choose Select, then select movies I want and finally Add to collection... . There I choose which collection to add the movies to, hit OK ... and nothing happens. The movies are not added to the collection.
The log output for when confirming the adding to collection dialog window is below. It says it is serializing 0 items, however, I had 3 selected. Maybe the selection is not being handled properly?
May 30, 2016 21:55:50 [0x7f81113fe700] DEBUG - Request: [192.168.1.54:57309] OPTIONS /library/metadata/1386,1404,1439/add?tag=%C4%8Cesk%C3%A9 (3 live) TLS GZIP
May 30, 2016 21:55:50 [0x7f8134bff700] DEBUG - Completed: [192.168.1.54:57309] OPTIONS /library/metadata/1386,1404,1439/add?tag=%C4%8Cesk%C3%A9 (3 live) TLS GZIP 1ms 516 bytes 200 (pipelined: 3)
May 30, 2016 21:55:50 [0x7f8119fff700] DEBUG - Request: [192.168.1.54:57344] PUT /library/metadata/1386,1404,1439/add?tag=%C4%8Cesk%C3%A9 (3 live) TLS GZIP
May 30, 2016 21:55:50 [0x7f8119fff700] DEBUG - Auth: We found auth token (xxxxxxxxxxxxxxxxxxxx), enabling token-based authentication.
May 30, 2016 21:55:50 [0x7f8119fff700] DEBUG - Auth: Came in with a super-token, authorization succeeded.
May 30, 2016 21:55:50 [0x7f8119fff700] DEBUG - It took 0.0 sec to serialize a list with 0 elements.
May 30, 2016 21:55:50 [0x7f8134bff700] DEBUG - Completed: [192.168.1.54:57344] PUT /library/metadata/1386,1404,1439/add?tag=%C4%8Cesk%C3%A9 (3 live) TLS GZIP 2ms 518 bytes 200
Thanks for having a look at it.
I am using Ubuntu server 14.04.