Click "accept" on mediation result and absolutely nothing happens?

Have 1.1.7 and when i go to click “Accept” on mediation result absolutely nothing happens. Doesn’t ask me my password, trade stays there.

Anything I can do apart from opening a dispute with arbitraitor?

This is the second mediation result that I’ve had and the second that hasn’t work (has never worked). The first one failed with “null pointer exception”

To answer my own question I only just noticed the text “You have accepted the mediators suggestion. Waiting for the peer to accept as well”. So I guess it’s OK at the moment. I thought it would ask me for my password in order to accept but I guess not.