Lock box shows objective marker & is on map, but invisible in gameworld

[Jurassic Fart 1]

In Ocean Avenue map, in the Serling Hotels underground car park / parking garage, there's a Lock Box that I have the key to (damn me if I can figure out which friggin' one it actually is, though) that I cannot locate, despite the fact that I am standing right gawdamned next to it. There is nothing of note visible on or around the white van that is obviously the target, no container or interaction prompt. I've climbed on top of it, have broken all the van's windows, but there's nothing there as promised by the map marker and its waypoint. Having had similar problems several times with this game, including malfunctioning character's physics (couldn't jump on something that the character was intended to jump on) which was repaired by verifying game cache...did not resolve the issue in this case.

Am I missing something, or is this a persistent and known bug or glitch? I've never had this problem with any other lock box. The irony is that whatever weapon that's supposed to be my reward for opening it, it's probably a useless piece of crap. There's no real urgency or need regarding this issue, but it's just friggin' irritating.

[XeRnUno]

Done this quest now 7 or 8 times and no, it's not bugged.

https://www.youtube.com/watch?v=8HzDV-ZWbhY

[Jurassic Fart 1]

I wasn't doing any Lost & Found quest; I was just following the damned map marker. I already had the damned key, which revealed the map icon for the loot.

I'm on my second playthrough, now. I'm still learning this game. I've unlocked only the first safehouse with a trader, so Drunk & Disorderly is a long way off for me. This time I'll unlock the Lost & Found quest before chasing the loot icon. Thanks, "Uno!"

It explains why the loot was invisible and non-interactive; it's tied to the active quest. It's a kind of steep learning curve; maybe it's because of the hundreds of hours spent in the precedent titles, expecting too much similarity in this game.