I found a bug when changing the color of bedsheets with the Ctrl+Click function.

When painting the bedsheet, the wood parts of the bed go invisible within its outline, showing the flooring underneath. This is permanent and unless you don't mind, you can deconstruct the bed which can be painful if it's an Excellent/Legendary bed. This happened with a second bed as well.

• I tried recreating it in multiple ways using newly constructed beds, but I couldn't immediately. Though newly constructed beds, also had wood go invisible after a long time went by (forgot to time it).
  
• When moving the beds in question to another place after reloading the save file, and then paint them, the wood still went invisible. HOWEVER, when painting new beds the wood became white, not invisible.
  
• Newly constructed beds, also had wood go invisible after a long time went by (forgot to time it).
  
• There's also no difference in behaviour between a regular and double bed.

I wish I could tell you how to recreate it, but I tried everything in my power within game for as far as I know XD Luckily I got a save backup, so no harm was done for me, but I hope it won't happen to others that don't save regularly or actually mess up a Legendary bed.