Definitely agree with this, Games start at 6 v 6 but often its actually 2 v 4 or something similar given people loading in, choosing their class and loadout etc. Meanwhile the game is filling up to 12 v 12, and the first point of a push map gets capped almost uncontested.
I've been getting something similar to this. It appears to happen only at the start of the round, when I first load in. When I put the gas mask on I get two floating rear sights (Or partial edges of the mask? Can't tell) Appearing in the middle of the screen. If I wait a small amount of time it seems to resolve itself.
Related, weapons, head models etc sometimes do not load in early in the round. Typically this resolves itself before the round starts.
Occasionally I will miss up to three spawn waves. It is as if the game has forgotten what class I have selected or similar, or that it simply does not spawn the player in. I can't tell, and it seems completely random at this point.
If this is a mechanic rather than a bug, it needs to be clearly communicated to the player why they didn't spawn. Like a "No class selected" alert or similar.