Server Version#:1.24.2.4973
Player Version#: 8.23.0
This bug existed for quite awhile now. On Android TV when burn-in policy was set to “image format only”, wrong subtitle was often rendered when external subtitle is involved.
For example when a video file have some embedded subtitles and an external subtitle, selecting the external subtitle often cause the player to play one of the embedded subtitles.
Changing the subtitle burn-in policy from “image format only” to “auto” solves this problem.