Maybe it is to keep people from making a mistake and typing and extra zero at the end?This, my friend, is correct. sorry, find it a very dumb rule. If a player is 1 million and you add by accident another 0, it will still allow you to buy the player in question. Still a 9 million costly misstake...
There is now a temporary maximum allowed bid equal to 10 times the current bid (minus one)