Join Training, select a map, spectate someone, if the player leaves the arena while you're spectating, you can now change spawn even while playing. Video demonstration: 

In the TFF 3.0 update, when in training arena, only the players that are on same map as you should be displayed in the radar, but it doesn't happen. Video demonstration: 

When there is 3 or less players in the arena, you can buy maps for free, but even if you're a donator and use /bm to buy maps for free using this rule, it will decrease your donator free maps amount.

The ID column is too tight to support 3 digits, as you can see in the image bellow, when the ID has 3 digits it seems it's part of the nickname, so I think the best ideia is to make it's size be able to fit at least 3 digits, because server's max number of players in the server is 512, no reason...

Join Training, select a map, spectate someone, then stop spectating, your speedometer will be disabled (hidden) and you will only be able to enable it again respawning. Video demonstration:

Join Training, select a map, don't move, spectate someone, then stop spectating, you won't be able use warp commands (/sw, /lw, /dw), you need to kill yourself (pressing F), to be able to use these commands again. Basically when you are in the "freeze mode", before start moving and spectate...