As per build
18.0.36 (8/29/2012)
1. NEW: Native AIFF encoder.
2. Fixed: Hulu playback from Theater View was not working properly.
3. Changed: Forced automatic subtitles will be enabled and shown when 'No subtitles' is selected instead of requiring a selection of 'Forced Subtitles (auto)' (the latter selection is now hidden).
4. Fixed: The options control used for customizing DLNA servers was not working fully.
5. Changed: Added support for entering an Access Key on the 'Sync Library' dialog (used to sync from a server to a client).
6. NEW: Added the ability to set a custom filter to the 'Sync Library' so that it's possible to pull just a single album, artist, etc. from the server.
7. Fixed: "To Be Recorded" list for television on LS client was empty when it should not be empty.
8. NEW: Switched to the reference ALAC decoder ( http://alac.macosforge.org/ ).
I have several titles ripped with ClownBD, then subtitle file checked in BDSub2Sub to ensure that the 'forced' captions are set - these are then saved as PGS files and muxed to Bluray folder format using tsmuxer.
'No Subtitles' is the option selected in options, however the behaviour is not as described in the build release notes - currently using 18.0.59
On playback the subs are identified as available - via the OSD - but they are not displayed unless I choose the sub stream from the OSD - subsequent playback identifies and displays the sub stream (only because it retains the setting on subsequent play), but does not correctly playback on initial play.