Premiere Pro misreading WAV duration from ProTools mix

I’m trying to figure out an issue with some audio mixes where the duration shown in the Premiere browser and timeline does not match the actual duration of the WAV file, even though Media Properties in Premiere show the correct duration (photo attached).

I’m working on a Apple Silicon Mac running Sequoia 15.7.3, and editing on Premiere Pro v25.6.4 (although this issue has also happened in previous versions of Premiere and macOS). I sent an AAF to the audio engineer, and the mix he sends back from ProTools comes in with the wrong duration when imported into the same Premiere project.

The mix has the initial sync beep, but it appears to be a few frames short at the end. We’ve tested multiple exports:
– 24-bit renders
– Printing the mix internally in ProTools, then exporting

All results are the same.

I also tried importing the file into a completely different Premiere project, and it still reads the duration the same way, so I’m not sure where else to look.

Thanks for any insight.