My buggy fell under the map and is considered "dead", but doesn't respawn and still is technically following me, so I can not hatch a new buggy, put the dead buggy away, or call him back to me. I am currently locked out of all buggy content as a whole as a result.

This also commonly happens with backpacks, but the game repair option makes this less of a problem

This happened to me and i have the full set of wolf spider gear and at the end game at this point so im hoping it will be fixed

How long does it usually take for bugs to be fixed / support?

 

IF ON A HOSTED GAME!!  -- i have a fix for this,  i think...   log out of your friends game, and have him return his buggy to the ant hill and see if yours returns.  Had this same issue with my friends buggy, hers disappeared under the map, but the icon was still there, she left and came back a couple times and it didn't fix the problem.   After she logged off, I returned my buggy to ant hill, and her buggy replaced it,  then after returning her buggy the the ant hill, i went and unclaimed it,   word of advice..  don't put anything on the buggy if its not your hosted game, this will prevent you from loosing important items.  instead drop them for your host to pick up and put on his buggy.

Just press T, then Z... unassign your buggy... then press T call him again.... the buggy works like the horse on the witcher 3... you call him and it reappears next you. Some places do not allow you to call your buddy... just walk some distance and try again.