Firefox: Accepting user joining through firefox is not possible

[NearW]

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

1. Create session with any browser
2. Join any session through firefox
3. Try to accept user => not possible

Expected behavior Accepting is possible and user will join the session.

Screenshots

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser: Firefox
• Version: current