Is window installation in new construction correct?

Hello everyone,
We are currently building a house and would like to ask for your advice.
We are having the windows installed at the moment, and we noticed that the frame on the left and right sides does not have the same measurements, specifically the depth, which is 13.5 cm on the right and 14.5 cm on the left. Although everything is level, it makes me a bit suspicious as to why during installation no attention was paid to ensuring the same depth on both sides.
Statement from the window installer: everything is fine, tolerance.
Architect: everything is fine.

Don't get me wrong, even if we are talking about millimeters, I am the one paying for everything, and it is reasonable to expect that everything runs 100 percent smoothly.

Therefore, my question is, is this still within acceptable limits, or do I need to worry in the future?

Thank you very much

Absolutely nothing runs at 100% on a construction site. Besides, plastering is being done, so where is your problem now??

My point is that it would work if you naturally take a few more minutes. I can imagine how the error occurred: While drilling the angles or the frame, it shifted. The few millimeters don’t bother me, of course, since as you said, it’s not noticeable visually, but the question was more about the function since the windows are not small and forces occur.

... however, the question was more focused on the function since the windows are not small and forces arise.

How should that affect things?

That over time the opening and closing does not run smoothly, or one raises the window oneself and places it in the right position

That over time the opening and closing does not run smoothly, or one lifts the window oneself and places it in the correct position

Nonsense, each sash is adjusted separately and over time something will also warp.