I just had one track loaded to my players where the waveform ended somewhere in the middle of the track (see picture) but the music continued. In the PC software it looks the same. Some days ago I noticed the same for another track. Re-analyzing the track does not solve the problem.
Both tracks with incomplete waveforms are encoded as FLAC. I never observed this for other file formats (MP3, WAV). But it is not a general issue with FLAC files because it does not occur with any other FLAC files that I have tested.
I hope this but will be fixed. I am using Software and Firmware version 1.2.2.