Additional Issue: IN865 Channel Not Receiving Uplinks
IN865 has 8 channels (screenshot attached).

But on frequency 866155000, I do not receive any uplinks in v4.
The exact same hardware setup (same node + gateway) does receive uplinks on this channel in ChirpStack v3.
Important Notes:
All config are defaults.
Node uses Class C
I am running two separate instances: one for v3 and one for v4.15.0.
They use different domain names.
I simply change the domain in the UDP forwarder URL to switch between v3 and v4 in Gateway.
Uplinks and downlinks succeed on both versions.
Only chirpStack v4 shows issues with Not Receiving Uplinks on IN865 Channel(Freq: 866155000).