[Bug][1.4.0.4]"Poor sector of fire" warning appears when it shouldn't

[shvaks]

Category: Shipbuilding
Repro attempts: 1/1
Repro steps:
1. Enter ship builder
2. Select dreadnought I hull
3. Add the following parts:

• reinforced main tower II
• advanced funnel
• rear tower IV
• standard superimposed barbette
• mark 3 13 inch gun turret (on top of barbette)

Observe the warnings and the turret's sector of fire

Current behavior:
"Some guns have poor sector of fire" warning appears even though the turret is not obstructed.

Desired bahavior:
The warning should not appear in this case.

[anonusername]

This has happened since early access. I usually just ignore the poor sector of fire warning and manually check all the guns.