ext-subs in "SRT UTF-8" which is Chinese sub

Hi

Today I have updated the current version of XPLAY from LG store,
and there is a trouble about subtitle.

Before today I can using ext-subs in "SRT UTF-8" which is Chinese sub,
but now it shows nothing.

and there is another issue, I can using the sub name "movie.srt", it shows in Xplay sub list,
when I using sub name "movie.chi.srt", it doesn't show in sub list.

Wish to hear you soon,
Thanks for your help!!

Have a good day.