The settings I make to the New Tab page shortcuts don't stick:
After some time (it's inconsistent) the New Tab page shortcuts reset to the default setting.
The shortcuts that I added there myself - disappear.
The shortcuts that the browser decides (how??) to put there - reappear ALTHOUGH I removed them. (for example - Booking.com always comes back to be the first, although I never use it, and I've removed it numerous times!!
A single browser restart or signing off from Windows or a single Computer restart did not produce it. But after a few days I encounter the same problem again.