Description

When attempting to upload a file to an Audio block on iOS, MP3 files are disabled (grayed) in the file picker. This makes it impossible to select MP3 files. The issue does not occur on Android or macOS.

Step-by-step reproduction instructions

1. Using an iOS device, insert an Audio block into the editor.
2. Tap Upload.
3. Attempt to select an MP3 file.

Screenshots, screen recording, code snippet

Environment info

• WordPress 6.8.1
• Safari 18.3
• iPhone SE, iOS 18.3.1

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure