Putting 2 ref glass on window sils makes stacks of 0 ref glass

[MonkestationIssueBot]

Reporting client info: Client Information:
BYOND:514.1589
Key:killermankey

Round ID:

4204

Testmerges:

• Behold, a Box!
• Isthisamap
• Steel Station, a new large station for the map rotation!
• [PORT] Custom antag objectives and a lot of changeling updates
• Fixes rev wins breaking the game
• Currently a TM PR for debugging
• Adds better trait for no stamina stun, adds it to various things that need it.
• Adds support for antag huds to only display to players with specific hud keys
• Artifact science stuff
• Shuttle gibbing code improvements

Reproduction:

Step 1: obtain windowsiol with grille
Step 2: Obtain stack with 2 reinforced glass in it
Step 3: click window sil with glass to putwindow on it.
Step 4: Feel pride in how you are now holding no glass!

[DexeeXI]

Confirmed round 6550