The same thing happened to me several times but not in fight. It happened while i was flying towards the bulls eye or RTB, and every time i thought i was hit by some IC missile. I noticed that after each update SU-27 is getting worse and worse. Did someone doing that on purpоse or not, i do not know but i don't even think to change it, and fly F-15 or some other spaceship.
People, it is not all that bad, there's no need to get upset about these things. DCS is not only aircraft combat simulator. That would not annoy me i stopped flying DCS and moved to another simulator and waiting for ED to correct irregularities in the DCS. Sincerely, my brain is resting from everyday annoyance that i had regarding DCS. Simply i just don't want to be a slave to someone's hypocrisy ...