[BUG] Flipped tables can be stacked on the same tile

[firebudgy]

Round ID: N/A

Testmerges: N/A

Reproduction:

Build a table. Flip it with ctrl-click. Build another table on the same tile and flip it again. It stacks.

This allows you to make a nigh-indestructible barrier of stacked table objects, even when attacked with sledgehammers or explosives.

[generalthrax]

I explained wrong, you can't actually do this. You can however stack a bunch of tables in a row and shoot past all of them even if you're not adjacent iirc