Matching Floor for Jewelcrafting Should be Jewel Chamber, not Regulus Pattern
Report: I was able to confirm this on June 6, 2022 when I unlocked Jewel Chamber Flooring. The "Has Matching Floor" for the Jewelcrafting Table and Gem Cutting Table say the crafting costs are reduced "when all floors in this room are 'Regulus' Pattern," even though 'Geometrica' Pattern also works. To be consistent with the other crafting benches, the "Has Matching Floor" should probably specify "Jewel Chamber Floor" instead. I have not modified any game files or installed any mods.
Discord ID: Phil#6227