SendCommandFeedBack "False" not working

So when using the "/gamerule sendCommandFeedback False" command it sadly does not work.

I have to mention that I only seem to encounter this issue on my Minecraft server, this did not happen in a singleplayer world.

Taking a look at the console the command does work?.. but I think the gamerule instantly gets reset. more context can be found in one of the images.

I do not know if its something in the server.properties but I did take a look into the file and I was not able to find something related to it. 

 

Hopefully this issue gets solved in any way.
And if this is a bug I hope this will improve the final outcome of 1.16 

Thank you for reading my report, have a nice day.