On Fairings and Nose Cones

[Geoclasm]

I'm noting some extremely inconsistent (and extremely frustrating) behavior when it comes to trying to build (and close) a fairing around a Nose Cone (KSP Vanilla - No Mods).

On occasion I succeed at closing the fairing flush with the nose cone like so : 

However on many occasions when I attempt to repeat this behavior, I get this increasing infuriating result : 

This is the EXACT. SAME. ROCKET.

So... is the first picture a bug? Is this the expected behavior? What do I need to do to close the fairing on the nose cone?

[FullMetalMachinist]

Closing a fairing in that way (which is usually called an interstage fairing) is notoriously iffy in KSP.  I'm afraid that there's not much to do but play with the last connection to get it to close. When the editor finally decides that your fairing is in a good spot the top line of text (shown brown in your second pic) will turn blue and will close on the nose cone. Taking a closer look at your second screenshot, I think what it's trying to do is close the fairing in a point (the way that they are usually used), but it's trying to do it inside of the nose cone, so it won't let you. No idea why it won't instead make an interstage connection to the outside of the nose cone.

Best advice I can give is to play with the camera angle and zoom, and hope for the best. Maybe someone else has a better trick.

[Geoclasm]

12 minutes ago, FullMetalMachinist said:

Closing a fairing in that way (which is usually called an interstage fairing) is notoriously iffy in KSP.

So it is legit and not a bug. Okay thanks.