Don't burn subtitles when Generic DLNA profile

*English is my second languge.*
I'm use Serviio with Panasonic bd player and android.
When I watch something with subtitle with Panasonic player, I checked 'enable burned-in subtitles'(Only when required)
But with android I have to uncheck 'enable burned-in subtitles'
My phone enables subtitles. And I set 'Only when required'
but Serviio still burn for subtitles to my phone.
Transcoding video is not working in Android.
So I think this is bug or I mistake something.
If There are not both of them
I request to add rederer profile 'Generic DLNA profile(not buned-in subtitle)' or 'Generic DLNA profile(support subtitles)'
thanks
I'm use Serviio with Panasonic bd player and android.
When I watch something with subtitle with Panasonic player, I checked 'enable burned-in subtitles'(Only when required)
But with android I have to uncheck 'enable burned-in subtitles'
My phone enables subtitles. And I set 'Only when required'
but Serviio still burn for subtitles to my phone.
Transcoding video is not working in Android.
So I think this is bug or I mistake something.
If There are not both of them
I request to add rederer profile 'Generic DLNA profile(not buned-in subtitle)' or 'Generic DLNA profile(support subtitles)'
thanks