[2067] Can't sync a property on a CPlayer between client & server

Category: KAG Client and KAG Server
Operating system: Windows
Build number: 2067
Description: It seems impossible to sync properties set on a CPlayer object between the server and clients. What I expect to happen is: set a property on a CPlayer object server-side, sync it, the property is the same on the client.

What actually happens is: set a property on a CPlayer object server-side, sync it, the property is some default value (like 0 or the empty string) on the client.

Steps to reproduce: Here is example code to reproduce (set the server gamemode to TDM and run it as a script attached to the TDM gamemode.cfg)

Spoiler: code

Code:

void onTick(CRules@ this) {
    CPlayer@ player = getPlayerByUsername("Eluded");
    if (player !is null) {
        if (getNet().isServer()) {
            player.set_u8("test", 7);
            player.Sync("test", true);
        }
        printf("player test property: " + player.get_u8("test"));
    }
}

The output on the server looks like: "player test property: 7"
The output on the client looks like: "player test property: 0"
Although initially the client outputs some stuff about bad snapshots:

Spoiler: client log

Error receiving property - object does not exist yet - (PACKET_SNAPSHOT_ONCE_PROPERTY_CREATE) propid 1000007
Properties not found (PACKET_SNAPSHOT_ONCE_PROPERTY_CREATE) id 1000007
Bad snapshot; skipping 10894b fail 16 (last packet 52 once 72 debug RULES)
Object with ID 48 has bad delta (2)
RecdDeltas: last netobj id 49, cache -1
Bad delta!
Bad snapshot; skipping 0b fail 18 (last packet 50 once 72 debug RULES)

Screenshots/Videos:

Kazaco: See Mak's solution.

 

Yes this is very possible. Maybe it's just wrong to try and put properties on players like this. But if so perhaps that should be documented somewhere.