[Known] Non-stacking items that should stack

Short Glowing Blue Cylinder, bottom
Short Glowing Blue Cylinder, middle
Short Glowing Blue Cylinder, top
Short Glowing Cylinder, bottom
Short Glowing Cylinder, middle
Short Glowing Cylinder, top
Strip of Thick Troll Skin
Elven Wall Sconce (Remove the maker mark)
Ornate Elven Streetlamp
A Curious Ledger
Blank Bulletin Board Flyer (Remove the maker mark)
Bottle of Elven Wine
Mantle Garland Swag (Remove the maker mark)
Rose Bouquet (Remove the maker mark)
Antique Curved Armchair (Remove the maker mark)
Antique Dining Chair (Remove the maker mark)
Antique Dining Table (Remove the maker mark)
Antique Round End Table (Remove the maker mark)
Barn Stall (Remove the maker mark)
Carved Oak Weapon Rack (Remove the maker mark)
Copper Bathtub
Gustball Field Tower (Remove the maker mark)
Hospital Room Divider (Remove the maker mark)
Kobold Corkscrew Wind Power Generator
Kobold Distillation Device
Operating Table (Remove the maker mark)
Ornate Tavern Counter
Ornate Tavern Counter with Gate
Prison Cot (Remove the maker mark)
Rusted Iron Greenhouse (Remove the maker mark)
Simple Wooden Mailbox (Remove the maker mark)
Small Elven Tent (Remove the maker mark)
Stage (Remove the maker mark)
Stage Stairs (Remove the maker mark)
Tavern Counter (Remove the maker mark)
Wall Mirror (Remove the maker mark)
Water Well (Remove the maker mark)
Wishing Well
Wooden Bathtub (Remove the maker mark)
Large Ornate Yule Wreath 2018
Medium Ornate Yule Wreath 2018
Castle Banner (Remove maker mark)
Deer Skin Rug (Remove maker mark)
Free Standing Long Banner (Remove maker mark)
Long Banner (Remove maker mark)
Short Banner (Remove maker mark)
Angled Ornate Cast Iron Chimney
Angled Stone & Wood Chimney (Remove maker mark)
Angled Stone Chimney (Remove maker mark)
Flat Ornate Cast Iron Chimney
Flat Ornate Stone Chimney
Flat Stone & Wood Chimney (Remove maker mark)
Flat Stone Chimney (Remove maker mark)
Ornate Cast Iron Chimney Floor Extension
Ornate Cast Iron Fireplace
Ornate Stone Chimney Roof Extension
Stone & Wood Fireplace (Remove maker mark)
Stone Fireplace (Remove maker mark)
Tall Ornate Cast Iron Chimney Floor Extension
Ice Hot Tub
Large Spooky Fountain
Large Tiki Statue
Lord British Round Table
Lord Marshall Benefactor Throne
Ornate Mantle Garland Strand 2017
Ornate Mantle Garland Swag 2017
Round Palapa
Virtue Oktoberfest Tent
Adobe Stables
Hatch Basement Entrance
Large Adobe Dome
Medium Elven Tent
Ornate Gazebo
Small Adobe Dome