GonnaExplode

Strange bug I discovered where when placing certain parts that move around or extend (such as struts, extendable solar panels, and the folding antenna) there will be two models projected onscreen. For example, if I try and place a Gigantor solar array, when placing it it appears to already be extended. However, I can still right-click and extend it manually, where a second set of panels comes out and adjusts itself. It's only visual, but it's incredibly annoying and looks really stupid. Any ideas on how to fix?