[masklinn]

In my experience an other common issue is a race condition in the trigger, aka the system is not quite settled yet when an interaction is performed leading to that not registering.

This is more likely when the system is loaded / shared e.g. a CI Vm.

It’s instructive to watch a screencast / recording of UI tests, because you don’t necessary intuit how spazzy and fast the harness will perform its interactions.