Hey there! Before you report a bug or suggest a new feature,
please make sure to follow these steps first!
This is not the place to learn Java. Please refer to StackOverflow
for your general programming questions.
Updating the SystemChannel or AFKChannel doesn't work
For questions join the official JDA discord server: https://discord.gg/0hMr4ce0tIl3SLv5
When I want to update/set the System- or AFKChannel, it doesn't affect anything when I check it after the request, even if I check it with the bot or by myself in the official discord client it is "null"!
But it also didn't throw any Exception its similar if I use queue() or complete().
Sry if my bug request is not perfect its my first time, I hope I could explane it correct.
My Code: https://pastebin.com/xBe1r4zS
You are correct about AFKChannel, SystemChannel works however.
This has been fixed in 3.6.0_362
@MinnDevelopment
SystemChannel works however.
I have tested it many times but I can't get SystemChannel working in 3.6.0_362 (the latest yet), I didn't give “null” but it !always! resets the SystemChannel on the guild and yes the channel exists already before I queued the guild manager
Here is a proof that it works, my bot was setting it just yesterday when I tested:

@MinnDevelopment
Thanks for that, I have tried so much but I don't know why it wasn't working, yet I have implemented another way and it works but it isn't much different. So many thanks for your help and
This has been fixed in 3.6.0_364
the bug has been fixed already in 3.6.0_362!
I will keep this issue open until the commit has been merged into master.