AkRoom misbehaved, routed in Aux Bus from other AkRoom

Question

I have a Sound Playing, in an AkRoom with the Aux Bus called MainHallway. The listener is also in the same AkRoom and it's very close to the sound.
However, in Wwise Profiling, the routed Aux Bus are not only MainHallway, also routed a Aux Bus called UpperLibrary.
When the listener on it's way to the Sound's location, it does passed by UpperLibrary's AkRoom, but it's only passing by. The listener has not been entering any other AkRoom.
Click here for Picture Reference

Other than that, the way I've set up AkRoom, some of them does overlapping each other, but I've assigned the Priority correctly and AkRoomPortal was able to detect the corresponding AkRoom.
And similar issue does also happen at other places, like when the Sound and Listener is in other room (both in the same place), but would also route in other AkRoom Aux Bus.
However, MainHallway AkRoom does overlap with UpperLibrary AkRoom but MainHallway is the larger on and UpperLibrary is only a small room.
MainHallway is 2 Floors high and Upper Library is only 1 Floor high, on the Upper Floor. The Sound and Listener are both in the Lower Floor.

Any comments or advices are all welcome and appreciated. Thanks in advance

Wwise Version: 2023.1.6.8555
Game Engine: Unity Engine
Unity Version: 2022.3.24f1