floor tile welding is completely fecked.

[Aporhtonoma]

Description

after the welder floortile fix the feature has been completely fecked to oblivion.The problems i have noticed include:
floortiles being eaten up if the welder is closed and you try to weld said floortiles
floortiles being eaten even after the torch is open (being on the floor is usally required(usually))
floortiles producing a maximum of 1 metal in a stack

Test Merges

Round ID: 22388
BYOND Version: 515.1608
Server revision compiled on:
Master commit: 5fac8559677775d813fe94d457b3680a47738f09
The following pull requests are currently test merged:
#13409: 'The Gun Sound Overhaul 2.0 + More Weapons to EORD (PART 1)' by XSlayer300 at commit 9bae97f5a6
#13426: 'Adds a HUD text timer for both hive collapse and nuke' by Arturlang at commit 5f28c76d1d
#13515: 'Adds 2 new tadpole models' by XANAv2 at commit d98aa86a61
#13566: 'Lawanka Outpost' by Barnet2 at commit caf133f50f

Local commit: e844ee2
Server tools version: 5.13.2

Reproduction Steps

1 get a stack of floortile
2 weld them
3.1 the welder is off no metal is produced tiles dissapear

3.2 the welder is on
4.2 1 metal is produced the rest of the tiles produce nothing tiles dissapear

3.3 the welder is on and floortiles on the ground
4.3 no metal is produced tiles dissapear

Screenshots

No response