In build 14 Alpha 9.5 patch 4.
I have just tried to play the Nigel Blythe sidequest.
When you first meet Nigel Blythe & Artois Voisey at Nevis they are fighting.
On entering Pirate Settlement, Nevis , you are automatically walked towards them before Nigel speaks to you and control is returned to the player.
During this the screen is "Letterboxed" (black areas at the top & bottom).
If you choose Nigel Blythe then:-
1) the "letterbox" remains while you are on land or your ship deck and when you use the world map
2) you cannot enter any buildings, or parts of your ship, or go through gates into towns (except by using the fast Travel menu) locked padlocks appear at the top of the screen.
3) cannot go from one part of the jungle to the next ( locked padlock appears)
4) you cannot save the game (save button deactivated - not iluminated)
I have sailed to Jamaica, Bonaire & Curacao with Nigel as an officer and it is the same on all of them.
If you choose Artois Voysey everything works properly
Error logs attached:
I have just tried to play the Nigel Blythe sidequest.
When you first meet Nigel Blythe & Artois Voisey at Nevis they are fighting.
On entering Pirate Settlement, Nevis , you are automatically walked towards them before Nigel speaks to you and control is returned to the player.
During this the screen is "Letterboxed" (black areas at the top & bottom).
If you choose Nigel Blythe then:-
1) the "letterbox" remains while you are on land or your ship deck and when you use the world map
2) you cannot enter any buildings, or parts of your ship, or go through gates into towns (except by using the fast Travel menu) locked padlocks appear at the top of the screen.

3) cannot go from one part of the jungle to the next ( locked padlock appears)

4) you cannot save the game (save button deactivated - not iluminated)

I have sailed to Jamaica, Bonaire & Curacao with Nigel as an officer and it is the same on all of them.

If you choose Artois Voysey everything works properly

Error logs attached: