Some UI is disabled and I can't mark

I don’t know what exactly is causing this bug, but for the past 3 days I’ve been unable to see a lot of my ui (often including the visual effects for being injured, the medkit and repair progess icon, etc.), and I’ve been unable to mark anything.
Has anyone also had this bug? I remember it started when I tried to eject from an Su-9.

Check your settings, you may have turned something off there

I guess it was the turning tips off. I don’t know why that stopped me from marking enemies though.

in my case I suffer a funny bug in where you can fucking see clearly a tank, you mark it, you see the red dot but the friking tank is not marked!

Yup. Its tips.

Really annoying