Osnap highlighting/snapping not working with V6 Mac

For some reason no matter what I do with the modelling aid preferences the object snap is not displaying properly. When trying to use the function it’s a case of hit and miss- theres no “snapping” to speak of. Also there’s just a normal mouse icon for the cursor instead of crosshair.

For instance when I start a polyline and try to snap on an end of an existing line the cursor doesn’t move to the end as shown in tutorial videos. I’ve got everything turned on so expect this to work? Also tried different ‘snap radius’ settings too and still hasn’t changed anything.

Any help would be massively appreciated as I have a deadline looming for university.

Bizarrely, restarting my Mac seems to have solved the issue!!!