Unable to Share/Export Call Recordings from Notes App

I’m experiencing an issue with call recordings saved in the Notes app on iOS 18. Specifically, when I try to share or export a recording, the process takes an unusually long time. For one particular recording that’s about a month old, the loading bar appears, but once it completes, the share/export menu simply disappears, and the file isn’t shared.

This issue prevents me from creating a transcript, which is crucial for my work. I’ve tried various methods:

• Saving the recording to Files
• Sharing the audio directly
• Restarting the app and my device

Unfortunately, none of these options have worked. Typically, this process is slow but eventually works, so I suspect this is a bug related to older files or larger recordings.

Out of desperation, I’m now updating to iOS 18.2, hoping this resolves the issue. However, I wanted to report this bug to see if anyone else has encountered it and to ask if there’s a solution I might have missed.

My device is an older iPhone with a Neural Processing Unit (iPhone 13 Pro), so I find it frustrating that Apple's transcription tools aren't available on this device, even though it seems capable of supporting the feature.

Any help or advice would be appreciated!