#1
When in a ship that has rail turrets docked to it, you can use the arrow keys to cycle to it, but can't use the arrow keys to cycle away from it. Player will jump between parts that make up the rail turret
#2
I'm not sure if this is a bug or intended but here are my findings:
The up arrow (next docking ship):
If you reach the end of a chain, you'll constantly switch between the previous entity in that chain and the last one if you keep pressing it.
If you have multiple docks on that last chain, it will only get stuck between 2 specific entities, and not cycle through them all
The down arrow (previous docking ship):
The opposite, you get stuck between the mothership and the entities docked to it if you keep pressing it.
Only stuff docked on the furthest chains can't always be switched to (since the up arrow is stuck between 2 specific ones).
Screenshot to clarify:
{F403}