Tempo becomes disabled and resets to ~60 BPM after reopening project (iOS)

Cubasis
1

Device / OS / App version:

  • iPhone 13 Pro Max

  • iOS version: 18.6.2

  • Cubasis version: 3.8.1

Issue description:

I’m encountering consistent and repeatable behavior where tempo control becomes disabled after reopening a project that contains imported audio or MIDI files. When the project is reopened, the tempo appears to reset to a very slow value (approximately 60 BPM), and the tempo control is no longer editable.

Steps to reproduce:

  1. Create a new Cubasis project.

  2. Set a specific project tempo (e.g., 100–120 BPM).

  3. Import an audio file or MIDI file (this occurs with:

    • user-created audio files

    • user-created MIDI files

    • third-party MIDI loop libraries

    • Cubasis factory loops).

  4. I have tried matching the project tempo before and after importing without any success

  5. Save the project.

  6. Close Cubasis.

  7. Reopen Cubasis and load the same project.

Observed behavior:

  • Project tempo is reset to a very slow value (appears to default to ~60 BPM).

  • Tempo control is disabled and cannot be changed.

  • Playback speed reflects the incorrect tempo.

Troubleshooting already attempted:

  • Deleted and reinstalled Cubasis.

  • Created new projects from scratch.

  • Used factory demo projects as a baseline.

  • Imported different file types (audio, MIDI, factory loops, and third-party MIDI loops).

  • Issue persists across all scenarios tested.

Additional notes:

  • This occurs reliably and is not project-specific.

  • The behavior only appears after reopening the project; tempo works correctly before closing the app.

Please let me know if this is a known issue, a setting I may be missing, or if additional diagnostics/logs would be helpful. I’m happy to test a workaround if one exists.

Thank you.

2

I would check the ‘Global Track’ and see if there’s some entries there that set the tempo.
The main tempo control is disabled when the project contains tempo/time-signature automation.

3

I use Phillips hearing aids that connect audio from my iPhone via Bluetooth. When I disconnect the hearing aids the problem seems to go away. I will continue testing.