Ever vehicle in the game will not let me out of them

Cargo Ships doesn't alter the base game enter/exit vehicle command at all. (Only the enter/exit ship command, default Shift-Enter). Are you sure it happens when only Cargo Ships is installed, or is it some other mod combination?

I also am experiencing this issue with Cargo Ships installed in my current modpack. If the "enter/exit ship" keybind is set to the same keybind as "enter/exit vehicle", it will prevent me from exiting other vehicles. I could provide a full list of my mods if necessary. I haven't tested it with Cargo Ships alone.

My current workaround is to just bind "enter/exit ship" to something different (Control + "enter/exit vehicle" keybind).

if the "enter/exit ship" keybind is set to the same keybind as "enter/exit vehicle",

This was never supposed to work. It was always intended to be a separate key combination (default is Shift-Enter).

Fair enough. I thought there probably was an issue with that if you all specifically added a separate keybind.