Mine slow down closer to 4/5 of the way up. Pretty sure it’s a soft close feature. There is no indication of strain when it slows, just the motor goes a bit quieter, as it gently lands home.

 

Same here.

 

Yes that’s normal operation. My 2017 and 2019 both did it.

 

Safety feature. The window slows down in case fingers, hand, child's head etc. get caught in the window.
Then, it reverses....

 

My 2015 does it as well. Like mentioned earlier it's a safety feature. I actually like it.

 

Not just for safety in case of a child or someones hand still sticking out but also generally just good for the motors longevity.

The harder the windows would push the glass at the top when closing against the seal would cause more strain when they receive that momentary force pushing back against the glass.

I remember my old 1995 W140 big body mercedes S class. Now that thing!!! had full thickness double pane glass with a vacuum air barrier in between to create some serious noise control. Super effective but holy crap were they heavy and didn't slow down until they closed... and guess what aside from ridiculous sound proofing reliability wise they also were awful... motors would fail all the time like everything else electric on those cars lmao.