Had this happen to me several times, but never paid it any attention until several others were experienceing the same thing.
Sometimes when puling back on stick, the nose will "bounce" as if the stick input is getting cut-off. It happens in a defined rythmn, almost if you were counting 1, 2, 3, 4..and so on.
Also after the last patch, i had a "do not move controls" rapidly...haven't had one of those in forever.
All my stuff checks out here as far as I can tell.