Quick Edit text in a slide doesn't save

We tried the Quick Edit feature for Songs in the Preview and in the Live mode yesterday. Unfortunately it wouldn’t save the change(s) made. Neither the OK button at the bottom of the pop-up screen nor pressing shift+enter made any difference. We’ve tried this on both our church’s Windows 10 PC and my home laptop running Windows 7, both are 64 bit versions running Quelea 2020.0

Any suggestions or solutions?