Ran into some strange behavior last night. When you drop a heavy crossbow into inventory the actions tab shows the weapon with the wrong amount of hands and no damage listed in the box and no ammo below it.
If you dbl click the damage it works and if you open the weapon you can select the ammo source. You can even change the hands. (s1)
Once you log back in it is updated and fixed. (s2)
5e and the only ext is loaded. I am not sure if I am doing something wrong.