There is a weird glitch in the game that makes it so that if you point at a certain place in a bigger map than the lab and press n (which would normally just spawn the selected item at the place you're pointing at) it spawns in the middle of the map... it's incredibly annoying. Please fix, will you?
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You can disable zooming via [Settings > Mouse > Allow scrollwheel] and [Settings > Keymap > Camera > In/Out] if you don't like it.