The same for me. If I have my weapon [Glock, e.g.] locked and run over another [Steam Hammer, e.g.], the weapon [Steam Hammer] disappears.
It happens pretty often that I run over a weapon which I want but forget to unlock my current one. Prior to the latest update I was able to go or jump back after unlocking my current weapon and pick up the new. That’s, however, impossible because, as said, weapons disappear when running over them with a locked weapon. :/
Just saw you updated NR
today, so I’m not talking about the latest update but the update before today’s.
[Not sure, though... will check again tomorrow.