When deleting a TV series (with episodes) XMM gets kinda lost. Scenario:
- "Main" grid view (movies and tv-series) - select a series and delete it - deletion takes place (item disappears from grid and records including episode links indeed get removed from db) - while you still can click within the grid the detail window (html cards) never comes back and you cannot edit anything from this point on - exiting XMM closes visible windows BUT the program remains open in the background and according to Process Explorer consumes constantly 25% of CPU time (on a i5-2400; your milage may vary) for eternity or untill it gets killed manually.
Seems to me like something is wrong with the db refresh which obviously takes place after the deletion (or the delete routine for Series + Episodes has a bug).
For me it's no high priority issue because it only happens once in a while that I clean up my collection. But I thought you should know...
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Update: It does not happen when you first delete the episode(s) and only afterwards remove the series entry.
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Update 2: Works now with 8.0.2.3 --> Therefore I added "Fixed" to the subject line.