I’m one such user. I’ve been using Affinity Designer since the first public betas, and I curse it every time I use it. If you do any kind of precision work, it’s an abomination.

It can’t expand strokes correctly; it’s imprecise as hell when using boolean operations; it can’t do vector patterns (nor are they planned); it can’t even correctly join two specific points from different shapes!

I stick with it for the price point and because I ethically dislike Adobe, but the software as is is utter junk if you care about precision in your work.