[Fuchs2468]

@AchillesPunks Maybe it has to do with Skin Helper Service? It's the common thing between the 2 skins + when I changed autoclose infopanel in skin settings to "0" (0 to disable autoclose) the audio settings and subtitles settings worked fine. And this function is handled by Skin Helper Service.
Now it works but to get infopanel to hide I have to press Back.
Strange why SHS treats the 2 dialogs (audio & subtitle settings) like the infopanel.

I have found a solution to this problem.
Replace the content of "script.skin.helper.service\resources\lib\listitem_monitor.py".
With this content: listitem_monitor.py 

After the change, the menu should react as you expected. Have fun testing it.