I have the fallout ultimate edition from steam.
I cannot pick up fission batteries. When my cursor goes over one it doesn't show it as a take-able item. If I add one in the console and drop it, the item will just float in mid air and while it can be picked up again, I have to aim my cursor at a point nowhere near the actual item.
Also, since using the chemistry set in Doc's house at the beginning of the game, no other chemistry sets I come across can be used. Again, there is no indication that they are a usable object.
I'm not running any mods.
Any suggestions? Would a reinstall help?