These are from my experience and may or may NOT be common/rare.
Also I read some but not all, so some of these may have already been confirmed.
-Windhelm house has Bugged Weapon Racks/Plaques/Display Cases. Ex: "Activate" never shows with or without an equipped weapon/shield
-Ebony Blade and Skull of Corruption fall off Weapon Racks/Plaques when Reloading the cell. (Tested at Markarth house)
-Nettlebane and Blade of Woe daggers display strangly on Racks/Display cases. Ex: halfway being out of the display. (Tested at Markarth house)
-Riften house (Honeyside) displays weapons crooked on Plaques. (Tested with multiple weapons)
-Proudspire Manor has 2 bugged weapon rack parts, the very left and very right parts of the one in the basemant are bugged.
-I duel wield animated killed a Winterhold guard in the city... he fell through the ground and only his torch and sword remained.
-I fell through Whiterun's ground when beside a building, forgot the name but may check again if asked. I got back up from the water.
-Mercer Frey Glitched out and would not open the door when you go to find Karliah with him, Reloading fixed it though.
Only big problem from these in my opinion is the Windhelm house bugs, I can't have my true trophy room until it's patched, and i'd like to show off the Ebony blade too.
I hope this helps, If I find anything else worth posting, I will.