SIP caller - why can't we unmute them?

Hey all,
I have noticed that in Jitsi, I have the option to mute a SIP caller, but not to unmute once they’ve been muted. I have been told by some developers that the reason is due to Jigasi and not to Jitsi Meet. Are there any plans to implement unmute, or does anyone out there know why we can’t achieve unmute?

There were recent changes to not be able to mute jigasi participant, cause now those participants cannot unmute after being muted.