I can not longer play 7.1 audio??

I was able to play any movie with 7.1 aac audio and now with a recent update can not play anything with that format. When I go to play a movie with that audio selected. It says “there is a problem playing this item” When i switch to a different audio track it like aac 5.1 works fine. Here is the error code i get when attempting to play with Windows app “mf_media_engine_err_src_not_supported hresult 0xc00d36B4” I did not have this issue until the latest update to plex

this issue will be fixed in the next Plex Pass release of PMS

@OttoKerner said:
this issue will be fixed in the next Plex Pass release of PMS

But it worked before this last update???

yes it worked before on my playstation3 and chromecast