Currently, when using floor-aware data/maps, you filter by selecting a facility then a level. That filter only applies to the selected facility, and not the other visible facilities nearby.
There is no way to indicate this mismatch of levels (unless you identify another building unit/feature), and this is very confusing to those expecting to see a consistent level across multiple facilities (certainly it is not intuitive to expect one structure at one level and the rest at the default ground level).
I suggest applying the chosen level filter to all facilities in the dataset, or alternatively, so as to minimize confusion (this is an existing Idea).
It would also be great to choose a level filter without needing to specify a specific facility (this is great for users who are trying to view multiple facilities at the same time).
Here's another somewhat related idea