Safari "Stay on Page" pop-up keeps appearing
Every time I go to a website I get the following popup when I go to any link on the site:
It doesn't seem to matter what website, and I have to select 'Leave Page' to continue.
Generally this only happens the first time I navigate away from the original page.
Is there any way to disable or remove this?
I have tried zeroing all Safari caches and restarting machine, and staring Safari with shift key down, but nothing seems to make any difference.
Cheers
Mazcar
iMac 27", macOS 10.13