Custom filter, audio language does not correctly handle unknown/undetermined language

[mervincm]

Server Version#: Version 1.18.9.2571
Player Version#:PfWin Version 1.6.2.994-e05b79d6
acts the same with the web player on chrome: Version 4.30.1

Go to TV shows library, drop All to reveal custom filter, select Audio language is not English, and it does not display the files with audio languages set to und (undetermined)
similarly, if you set it to Audio Language is und, it correctly fleshes out the und to “undetermined language” but it does not find them.

I have done a scan and an analysis of the whole TV Shows library. Plex shows the audio language an unknown (strangley not undetermined) when you chose an episode that has no language tag on the audeo stream.

[mervincm]

It’s been a week and a rev in version in all three products, few changes, no improvements.
Server Version#: Version Version 1.19.1.2621
Player Version#:PfWin Version 1.6.5.1097-3bb9dc68
acts the same with the web player on chrome: Version 4.30.2

in Chrome it acts the same
TV Shows Library, Library, drop all , pick custom filter, audio language, is, und, enter, click apply, and und is properly resolved to undetermined language, but no matches are found despite them existing.
TV Shows Library, Library, drop all , pick custom filter, audio language, is not, English, enter, click apply, and no matches are found despite them existing.

in PLEX for Windows the functionality is broken
V Shows Library, Library, drop all doesn’t work any more, it doesn’t drop to reveal the visible pick list. you can put your cursor on the line and us arrows to change the value, so I can perform a search, but usability wise it has been broken. when you perform the search, it fails similarly to last weeks products.

, pick custom filter, audio language, is not, english, enter, click apply, and no matches are found despite them existing.