I have noticed that depending what direction the Sloped Castle wall is facing it will show up correct or damaged.
East and South show up fine
North and west show up damaged
I did not pay attention as to weather i was sloping up or down
I will do another test to confirm with slopes up or down
*** New Test Info ***
I just did a new test and have confirmed that it does not matter if its a up or down slope. It matters what direction the slope is going (N,S,E,W) and what castle wall direction (N,S,E,W)
North Slope = South side is higher then north side
South Slope = North side is higher then South side
East Slope = West side is higher then East side
West Slope = East side is higher then West side
A North Slope will Display a East facing UN-damaged wall and a West facing Damaged wall.
A South Slope will display a West facing UN-damaged wall and a East facing Damaged wall.
A East Slope will Display a South facing UN-damaged wall and a North facing Damaged wall.
A West Slope will Display a North facing UN-damaged wall and a South facing Damaged wall.
Those are my findings
In case my words above are confusing In the photo i attached the Left side walls are on a East Slope and the Right walls are on a North Slope