That is definitely a glitch. Did you post this in support and see what they say there. You would probably get better answers.
Good luck with it though.
Glad you captured it on video as the screenshots above didn't help. I did not have this since day 1, but I have had it recently. It gets quite annoying when things like that aren't working they way they are designed.
Ya it seems to happen with any sights that blur out your peripheral vision, including tracker, thermal, and sniper.