The usual typical question besides sending in a bug report would be asking what mods if any do you have installed, can troubleshoot by turning them all off and one at a time try turn each back on to check if the problem persists to identify a possible mod related issue causing it, in which case you'd have to report it to mod maker too which unfortunately in most cases is a hobbyist who may or may not have the luxury to be as responsive as one who has it as a full/part time job to work on the game.
Hope you get it solved.
