Time: Any
Frequency: Always
World name: Diabolos
Character name: Carmilla L'fanu
NPC name: N/A
Monster name: N/A
Class/Level: Black Mage Lv.50
Party or solo: Both
In-game time: Any
Area and coordinates: Any cottage in The Goblet (unsure if the issue is also shared with Houses and Mansions)
Details:

Currently there's a (bug? unintended feature?) that prevents furniture to get close to the wall only in houses located in The Goblet.

Using a Potted Spider Plant as example, if you try to move the potted plant close to the wall it wont let you (1, 2), the same issue can be observed by using pretty much any furniture, be it tables, chairs, bookshelves, etc.

But as you can see here the issue is absent in houses located in Lavender Beds and Mist.

For further information and more examples please check this thread.