Landing Craft port into another dimension.

[Imp]

does not show the grey map edges like a normal

On the odd ocasion with both generated & user made modified map some grey hexes may not show or have very little grey, just the odd strip not an entire border. Placing water does seem one that can throw up but unless you are new to the game would have thought it was obvious all border hexes are treated as grey retreat/exit hexes.
Perhaps a note in the game guide for those that dont realise if it does not say already.