Yep, seeing the same on my iPad 9th Gen, iOS 26.0.1 with Build 1876.
Tested with a stereo 16-bit 48kHz 320kbs MP3 file.
As you say, track duration shows as 0.00 and it won't play, yet oddly, there is a complete waveform of the entire length of the track produced (at least for me) as seen at bottom of the Details and Audio tabs, and in full on the Regions tab!
Interstingly,
- If I duplicate an existing song and REPLACE the audio files, it works fine.
- If I create a song, import audio file (i.e. repro problem) then on the Audio tab, click Add Tracks (it can even be the same audio file as initial import), then everything is OK.
So it seems to be something in the initial audio import on a new Song.
