DU keeps references to an old UE after it moves out of range
During our testing with a COTS UE (Crosscall Core-Z5) OTA with OAI DU from commit e15fa14c, we saw an issue when the UE moves out of range of the antenna, causing the DU to keep old references to UEs, as can be seen in the attached logs.
Afterwards, the COTS UE was not able to reconnect by moving in range, and had to be put in and out of airplane mode to reconnect.
We were able to consistently reproduce that issue by following the same steps. I do not have access anymore to an OTA environment to reproduce further.