That's wild, I've been playing PC m&k Crypto for years and I've never run into that problem. Must be a console only problem.
I will note that there has always been a problem with being able to grab banners off of death boxes that are at strange angles. This seems to be less of an issue these days, so maybe they fixed this awhile back, but for years it was the case that if a death box fell in such a way that it was titled at all, the drone couldn't grab the banner. This problem was especially prevalent if the death box landed in water.