I’m having problems when holding shift and drawing a spline. It used to snap to 90 degs but now it snaps in strange ways. Have I changed something without realizing it or is this another Autodesk “feature” ?
it works as it did before here, don’t know if there’s anything new to tick to make it behave differently though.
I think you misspelled your post title 
Lol, Freudian slip?
Title definitely made me chuckle. 
Make sure you didn’t activate a grid helper. That can cause that issue.
oops. 
I’ll check to see if I’ve activated grid helper or something else. Cheers