Tried to complete an Apparition Incursion. Torment I, looked like I was solo in the area. The first boss appeared, was defeated, Belial moved on. In the second area, there weren’t enough spawns to progress the meter far enough to get the next boss to appear.
There’s a screenshot of what my map looked like with a few seconds left on the timer at imgur[.]com /a/WH7D68v. I was close to spawning the second boss, so maybe if I had full-cleared every single red dot on the map, it might have made it? But that seems unintended/like really bad design/not how things were on the PTR. The incursion just ended up wasting my time.
You might need to check on betrayer eye spawn rates, etc.