Some Commands like 'gamemode <x> <player>' doesnt send a response to the remote console. (Also 'say'.)
The expected response appears in the public chat as [Rcon:...] but not in the Remote Console as Response.
(On say' i would expect something like 'Message send')
Linked issues
Comments 6
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been deliviered.
As of 1.6.2 the vanilla server doesn't send any response to these commands but exist in the server log