Bug: sub default go off if in preview mode

After a lot of fiddling I found why I always had to reset to on default subs after switching off the unit.

There’s a firmware bug that, if the file browser is set to preview mode, makes default subtitles setting go to off by itself.

I hope this bug will be corrected by wd developers, as many users need to use subtitles a lot, and losing default setting is very annoying!