Radio appears on when you enter the server but doesn't actually work

[Lemuro]

When you exit a server with a radio toggled on and then join the server again, your radio appears to be toggled on with the green square in the bottom right corner. However, the radio acts as if it isn't on and using button to talk into it does not work, requiring you to toggle it on and off again in order to fix it.

This happens every time and I believe this issue is the same for everyone.

[Marzii]

Just click on freq and click okay.

[anzati1]

or just toggle on and off

[Lemuro]

Just click on freq and click okay.

Yeah but why