From someone that fixed it with a plugin, but an actual fix would be appreciated:
"The engine provides a function to cause an entity to drop to the ground, it's called something like UTIL_DropToFloor. Anyway the plugin executes when a player dies and it searches for weapons near them and calls UTIL_DropToFloor on those weapons. Pretty simple patch. Same code could be done on the game itself, but a better solution would be to add some sort of collision to the weapons so they can't get stuck inside each other in the first place."
From someone that fixed it with a plugin, but an actual fix would be appreciated:
"The engine provides a function to cause an entity to drop to the ground, it's called something like UTIL_DropToFloor. Anyway the plugin executes when a player dies and it searches for weapons near them and calls UTIL_DropToFloor on those weapons. Pretty simple patch. Same code could be done on the game itself, but a better solution would be to add some sort of collision to the weapons so they can't get stuck inside each other in the first place."