When Automatically synchronize file tags with statistics
is enabled under Advanced it overwrites the Rating tag in Opus
Works with MP3.
Might be that Vorbis Comment doesn't support rating? But it shouldn't replace with an empty value.
Core (2013-06-14 09:44:34 UTC)
foobar2000 core 1.2.8
foo_audioscrobbler.dll (2013-04-14 00:53:34 UTC)
foo_converter.dll (2013-06-14 09:09:50 UTC)
foo_fileops.dll (2012-12-28 12:21:36 UTC)
File Operations 2.2
foo_input_std.dll (2013-06-14 09:44:34 UTC)
Standard Input Array 1.0
foo_playcount.dll (2011-07-13 09:47:18 UTC)
Playback Statistics 3.0.2
foo_playlist_revive.dll (2009-08-11 08:02:21 UTC)
Playlist Revive 0.2
foo_rgscan.dll (2013-06-14 09:09:54 UTC)
ReplayGain Scanner 2.2
foo_scheduler.dll (2012-12-24 13:31:21 UTC)
foo_sid.dll (2010-01-11 10:38:46 UTC)
foo_ui_std.dll (2013-06-14 09:44:34 UTC)
Default User Interface 0.9.5
Vorbis Comments support any tag field name when it only contains standard ascii characters. I made some fresh Opus compiles with the latest official encoder and file tagging worked fine with your settings. Perhaps a little more details how to reproduce would help.
Ok, it does it for MP3 also.
It's not a bug per se, more like an inconvenience when it syncs the database, as I didn't set the Rating from Playback Statistics > Rating.
I recorded a video describing it: http://www.twitch.tv/andreazvb/c/2536562 (http://www.twitch.tv/andreazvb/c/2536562)
Would be good if it only synced it if it had a value, e.g. 1-5, instead of just overwriting it with null.