Well then congrats, cause out of the 10 people I directly talked to, everyone else on the forum here and everyone in the Facebook Groups for Cyberpunk 2077 I take part in seem to have a different patch than you got. ^^ You must be special.
Ok, maybe I shouldn't sound so bitter here. Though it sounds super unlikely you are the only one who can still reload saves to do this I wouldn't even put it beyond the programmers to accidently trigger the problem with something you didn't do in the game, but a lot of other players did.
Ok sorry for delayed reply i was in the middle of the heist an had to wait until it was over to try something.
First the character that i was on there doing the heist was created this morning and i save scummed successfully to get max mod slots on 3 items, rocker vest, neotec pants and gold tipped solo boots.
Second once out the heist an gained control of v in his apartment i saved and loaded four old characters that have finished the story but i knew had never looted or been near the legendary corporate pants, i saved each character at the body and reloaded each 6 times all with the exact same results which was the exact same mod slots and the exadt same mods in them
Third i took the new character an lo an behold the exact same mod slot with exact same mods
So i'll hold my hands up an admit i was wrong but i was right upto i switched to a old character so fuck knows