When my base attached to a Stamp-o-Tron ground anchor loads (either by timewarping, or loading a quicksave, or approaching from a distance), my Excalibur fission reactor momentarily reaches insane core temperatures and overheats. The temperature is a big number for approximately one frame (took me many atempts of timewarping and pausing when exiting the timewarp in order to get a screenshot) and instantly returns to whatever the temperature was before the time warp.
This happens even if the reactor is turned off and cool (apprx. 400 kelvin). If I detach my docking port from the Stamp-o-tron, the reactor works as fine.
I've temporarily "fixed" the issue by adjusting reactor-25-2.cfg to allow insane temperatures, essentially making it impossible to overheat.