Safari address bar keeps clearing anything I type.
This is a strange one which I've googled and found no similar cases of. When I try to type anything into the address bar on Safari, it keeps disappearing almost instantly. The only temporary fix I can manage is to quit Safari and start it again. Then I'm able to type searches, addresses etc. for a few minutes, then this behaviour keeps returning. It's like someone is pressing the delete key at the same time that I'm typing. I'm only experiencing this on my home computer (Mac mini). It's never happened on my MacBook Pro (2018).
Mac mini, macOS 10.15