Bf V:Fjell invisible yellow parachutes

It's not an issue on your end, those yellow parachutes were removed years ago for some reason. Mercury also doesn't have them anymore.

So this parachutes are deleted from the game?No one sees?

Correct. If you search on YouTube for gameplay footage, you'll find that the videos recorded in 2020 or later don't have the yellow parachutes.

Also I know from testing on Mercury that the collision mesh of the parachutes is still there. Not all of them were perfectly flat on the ground so walking over some makes you float a few centimeters off the ground, or in some cases nearly a meter. This invisible collision even blocks bullets which can result in some confusing gunfights.