Talk:Caves/@comment-174.241.4.130-20130813200959/@comment-20738717-20130920145659

It has already been reported as a bug. On Klei's forums the developers commented that the bug is a consequence of underground deaths not working like surface deaths. Soon cave deaths will work just like surface deaths, avoidable only through touchstones, meat effigies and life-giving amulets. Once that happens, WX-78 will keep his upgrades.

For now, don't let robots go in caves.