Bugaetsa the game in the game in bokchito (Fortnite)

Hello , faced such problem that when I play custom game creation, namely box fight mode, I begin to fail the mouse, ie or fires by itself (like sticking coatings), or not shoot at all. Editing works as usual, without problems, the movement also. Played 4 maps of different authors, and everywhere appears this bug. The first round everything is fine, the second and all subsequent mouse starts to work erratically. In all the other games and modes of fortnight all right. No problems with the mouse not observed and not observed, I think it is some bug of the game. Thanks in advance