I once bid 9 Tokens on a player and then the bidding button disappeared, I realized that I didn't have enough money anymore so I thought that was the cause and I didn't bother with it anymore. But now that you say that it is possible to bid even when you have less money than the player will cost, it really looks like a glitch then.
Players who encountered this glitch should get their Tokens back, they clearly lost a real money currency by a glitch.
That may be right, I'm just in Season 3 right now. Still, please read the text above from me, that's why I thought it may be that he didn't have enough money.
Everyone can be wrong sometimes, especially if a glitch caused a problem.