Weird lighting box caused by reflection probe

This is my first time using reflection probes, so this might be a noob question.
I attached a reflection probe to my hovercraft so it would reflect its surroundings. This worked fine in the beginning, but then I installed the unity particle pack. There was a prompt saying it might change some project settings, but I installed it anyway. The problem now is that the reflection probe causes surounding objects to be lit up incorrectly.
It might be the case that this was happening in the beginning and that the particle pack has nothing to do with it. I really dont know how to fix it.