In the attached save, I walk into a stasis trap, expecting to trigger it. I get a warning, but it never triggers. I tried about 20 times.
Ah, treads don't trigger Stasis Traps. An explanation of trap trigger chances can be found in the manual section on Traps.
So I guess the better UX here is to remove the warning specifically for treaded Cogminds moving onto Stasis Traps :P