Weird interraction between RunConsoleCommand and ply:ConCommand() causes RunConsoleCommand to fail

[wrefgtzweve]

Details

For some reason, RunConsoleCommand doesn't work when it's indirectly called by ply:ConCommand

] version
Protocol version 24
Exe version 2025.03.26 (garrysmod)
Exe build: 18:16:47 May  1 2025 (9662) (4000)
GMod version 2025.05.03, branch: x86-64, multicore: 0
Windows 64bit

Steps to reproduce

Here "gmod_mcore_test changed from " will never print, as the convar never changes

if CLIENT then
    RunConsoleCommand( "gmod_mcore_test", 0 )
    concommand.Add( "testcommand", function()
        print( "ran?", GetConVarNumber( "gmod_mcore_test" ) )
        RunConsoleCommand( "gmod_mcore_test", 1 )
    end )

    cvars.AddChangeCallback( "gmod_mcore_test", function( name, oldValue, newValue )
        print( "gmod_mcore_test changed from " .. oldValue .. " to " .. newValue )
    end, "gmod_mcore_test_cvartest" )
end

if SERVER then
    timer.Simple( 3, function()
        me:ConCommand( "testcommand" )
    end )
end

Here for whatever reason it does seem to run when i add a 0 tick timer:

if CLIENT then
    RunConsoleCommand( "gmod_mcore_test", 0 )
    concommand.Add( "testcommand", function()
        print( "ran?", GetConVarNumber( "gmod_mcore_test" ) )
        timer.Simple( 0, function()
            RunConsoleCommand( "gmod_mcore_test", 1 )
        end )
    end )

    cvars.AddChangeCallback( "gmod_mcore_test", function( name, oldValue, newValue )
        print( "gmod_mcore_test changed from " .. oldValue .. " to " .. newValue )
    end, "gmod_mcore_test_cvartest" )
end

if SERVER then
    timer.Simple( 3, function()
        me:ConCommand( "testcommand" )
    end )
end