Loosing gold at the end of a match

Hey there,

It's been two times today that I lost gold at the end of a game.

First time I won the game, I lost -104 gold

Second time I lost the game,, I lost -100 gold

It was writen on the end of match screen and I saw it was effective on my bankroll...( didn't make a screeshot, I'll try next time it happens).

Edit : Here's a third one and a forth one. The loss of gold is effective even if I restart the app.