https://github.com/CoFH/ThermalExpansion/issues/36
BC messing up TE4's rendering of its machinist's workbench, autonomous activator and etc only at rare occasions.

Please open these on the BuildCraft forum instead (http://mod-buildcraft.com/forums/index.php?board=2.0). That really helps keeping github clean with things that have been investigated and are being worked on. This particular one is already tracked under #1958