I noticed this bug a few times tonight: Founders Cat with 2x LRM20 with Artemis. I have targetted an enemy, placed my LRM crosshair/circles over it, but it did not turn red and achieve lock. At first I though it was only a visual bug, but the fired missiles were really unguided.
Switching targets usually solved the problem.
Also please, make the door state indicator really visible and clearly readable. At first I could not find it at all, spent a minute looking all over the virtual cockpit in vain... I am not colorblind, but still have a hard time distinguishing between the pale yellow and green on that microscopic LED light.