The Invincible opponent glitch

Everytime I play eggwars most at the time I get killed by players that I cant see, you see, this glitch makes the person invincible meaning cannot see, earlier, I went to my base, then the green team killed me using fire balls and with his sword, but I did not saw him, even if I swing my sword, the "invinsible opponent" will be dodging it without me noticing, not seeing, observing, or be aware.