Items given to a follower register as stolen once taken back. Happened on 360 with item obtained as rewards from quests etc non actually stolen.
I am also having this issue. Specifically with Lydia, my only housecarl. I have found that this occurs with items that have been dropped for her to pick up, exploiting the infinite carry glitch. They are not considered to have been stolen in the Crime section of General Stats and, if they are given back to Lydia or dropped on the floor for her to pick up, they do not appear as stolen in her inventory. All the items actually traded to her before 1.2 patch are not considered stolen however any that have been "picked up" are marked as stolen when taken back.
Check your not actually "stuck" in crouch mode and pickpocketing by mistake. You can become stuck in crouch if you use objects while doing so (eg use enchanting table while crouched = stuck in crouch when in first person view).
Not the case as the dialogue options are all available and other NPCs can be talked to without entering their inventory.
Secondly, I am aslo unable to purchase the house from Raerek in Markarth. I know this has been mentioned before however I think it can be avoided if the player does not help the 5 people before talking to Igmund about becoming a Thane. I completed "No One Escapes Cidhna Mine" quest and killed Madanach before ever entering Understone Keep and I also had helped the 5 people required before being able to buy the house. I asked about becoming a Thane and there seemed to be a dialogue skip and the quest complete prompt thingo appeared saying that helping 5 people was complete. Igmund immediately started talking about buying a house however there was no longer an option about talking of becoming a Thane and talking to Raerek just prompted the standard responses of being Igmund's uncle, with no dialogue options. May be tied to the guards that are always looking to arrest me in the Shrine of Talos despite having been arrested before and having no bounty. Also, whenever I approach the Jarl, he is always engaged in the same conversation to Raerek about attacking the Forsworn where they live and Raerek replies that the Forsworn also live in the city. I have been able to talk to Raerek about work, receiving various bounties however no option to buy a house. Selecting the quest from the Miscellaneous does not show a marker anywhere.
Lastly, during loading screens and while looking at the inventory (whether it be during a sale or not), when changed to, some items tend to bug out and stretch across the screen quickly before returning to normal. No idea what causes this.