Surgically replacing an arm with a chainsaw instead gives an organic arm

[LilyStargazer]

---- Testmerges: ----
HAPPENED LATE INTO ROUND 3960, THE SERVER REVISION IS FOR THE ROUND IMMEDIATELY AFTER

Round ID: 3961
BYOND Version: 514.1589
Server revision compiled on: 2024-02-25T00:33:31+00:00
Master commit: 9a2cbe6fb409472886af754b1e96a9f44cbb2446
TGS version: 5.2.4
DMAPI version: 5.9.0

Current Informational Settings:
Protect Authority Roles From Traitor: 0
Protect Assistant Role From Traitor: 0
Enforce Human Authority: 0
Allow Latejoin Antagonists: 1

---- Reproduction: ----

Chainsaw obtained via crafting from the recipe gained in SCAV volume one book doesn't work as an arm replacement, and instead just becomes an organic arm?
Originally had a prosthetic arm, though after it was amputated the chainsaw was added in its place, it became an albino human arm, fitting with my character's skin perfectly
After removing the arm to see if it'd turn back into a chainsaw, it entirely vanished when the arm was amputated, like the server got confused what item it was supposed to spawn and just spawned nothing

---- Screenshots: ----

Didn't think to grab any, though the bug is self explanatory

---- Additional context: ----

It was attempting to replace my right arm, unsure if it would've worked on the left arm