[E2EE] Encrypted voice messages cannot be played on iOS App (shows 0s / stuck) - Web works fine

[lovekyleman]

Description

In E2EE (end-to-end encrypted) rooms, voice messages cannot be played on the iOS App. The player shows 0:00 duration and does not play. The same voice messages play normally on Web version (Safari/Chrome).

This issue has been reported multiple times in the past, but remains unresolved even in the latest versions.

Environment

• Rocket.Chat Server: 8.4.2
• iOS App Version: 4.73.0.108984
• iOS Version: 26.5
• Device: iPhone 16 pro max
• **Self-hosted

Reproduction Steps

1. Join an E2EE room.
2. Receive or record a voice message.
3. Try to play the voice message.
4. Player shows 0:00 and does not play
5. Open the same room in Safari Web version → voice message plays normally.

Expected Behavior

Voice messages in E2EE rooms should play correctly on iOS App after decryption, just like on Web.

Actual Behavior

• Shows 0:00 duration
• Cannot play
• Issue is specific to iOS React Native App (Web is fine)

What I have tried

• Updated to latest App and Server
• Reinstalled the App completely
• Re-entered E2EE password multiple times
• Left and re-joined the room
• Cleared cache / restarted device
• Checked microphone & local network permissions

Additional Information

• Non-encrypted voice messages work.
• This seems to be related to the decryption + AVPlayer bridge in React Native.
• The issue has been discussed in the community forum for a long time but little progress has been made.