I think the sample rate is always displayed and the volume just briefly when you change it.
Lovely, mine is now stuck to 192 even though the actual content is actually 44.1 (I don't think I own any 192 files).
@JohnYang1997 , @SHENZHENAUDIO looks like another bug. Is there any chance you can have an option to display volume level instead of sample rate? It's close to useless even when it's correct, but really unhelpful to have the display stuck on an incorrect sample rate.