As lot’s of sage people have said, you need 1 spacer on the driveside, although it can on run on the other if you want. I’ve very occasionally jammed my chain between the chainstay and chainrings in the little ring, but unfortunately it’s one of those things, because the swingarm swings away from the chainset under compression thus opening the gap, and a slapping chain in the little ring can sometimes find itself in the open gap at that moment. It’s also not helped by needing chainstay clearance for 36t double/bash setups which leaves a bigger gap than I’d like with a 32. There shouldn’t be any more trouble than a hardtail really unless as suggested above the chain is too long and flapping too much, or you’ve not set up the front mech properly.
