The dot on both a holographic and a red dot will float in the window based on your placement behind the optic. Modern/quality optics (Aimpoint, Eotech, etc)will have some parallax when you get to the edges but it’s minimal and really shouldn’t impact accuracy on a PCC given ammo and ranges that they are typically used at.
If you are trying to “find the dot” you aren’t using the optic correctly. I am a LE / NRA instructor and I see this all the time, especially in pistol optic classes. The key with a red dot or holographic sight is to focus on your target, present the firearm and the dot will appear in your line of sight. Do not focus on the dot. Focus on your target. It is a hard process for experienced shooters that are so used to picking up their front sight. But you need to train your eyes to be threat focused and not front sight / dot focused.