Yes, I have tried 816 and still, I can produce the same bug. As far as I know, there were some Gapless improvements in the build 815 and not in 816 (Changelog!). But none of those seem to fix the problem.
The playback stops 5-6 seconds before the end time, like stops at 4:04 in a track which is 4:10 long and a pop-up appears which reads "List Finished".
Can you reproduce the same? This happens to me when the last track in the list is about to finish and the repeat is turned off completely. I expect the playback to stop under the same conditions but only after the last track is played