A supposed glitch in Dead Space 3 isn’t actually a glitch. The DS3 “glitch” allows you to infinitely farm resources which will always respawn.
Visceral Games stated the following:
“The resource-earning mechanic in Dead Space 3 is not a glitch. We have no plans to issue a patch to change this aspect of the game. We encourage players to explore the game and discover the areas where resources respawn for free. We’ve deliberately designed Dead Space 3 to allow players to harvest resources by playing through the game. For those that wish to accumulate upgrades instantly, we have enabled an optional system for them to buy the resources at a minimal cost ($1-$3).”