Kerbal Space Program

Deployable parts like antennas do not always launch in frame 0 of their animation, causing them to be in odd positions at launch. this is fixed by extending and retracting the part on parts that allow it, or by reverting to launch or loading a quick save, and can be masked by adding a few frames of visual silence to the animation when making a part (if modding). The stock part this is most apparent in is the HG-5, which sometimes has about a 5° angle when on the launch pad. Attached are screenshots showing a pair of antennas before and after one of the two has been extended and retracted.