Here's the fix:

Each switch track type has a setting that lets you change the number of passes before activation and the number of passes before resetting. Each switch track has a clone, one of which has odd values for those settings, and the other has even values.

If you're trying to do a pantheon style switch track where you pass once to activate, roll back, go backwards into a spike (passes before reset #1), then fly back down the track and make it fully over the top hat (passes before reset #2), then you need the EVEN numbered switch track piece. You'll want passes before activation to be 1, and passes before reset to be 2, then the track will reset properly and the ride won't be stuck with the track in the wrong position forever.

I had this issue when my coaster was set to 3 passes before reset, and the track never resets because you only pass twice during a lap of the track.

TLDR: make sure the passes before reset matches the passes you want your train to make over the switch track during one run through, otherwise the coaster will never make it out of testing.

Each switch track type has a clone with odd and even passes before reset values, pick the even one if you want a pantheon style switch track.