For anyone seeing this issue can I check a couple of things just to see what's happening when selling rental properties? Are you selling using the Business Tab in the bottom left hand corner of the screen? Then you should get a message saying how much the property will sell for. If your Sim lives on the premises they will then revert to being a tenant and someone else can buy the lot. Can I ask if the pop up shows you a price like the attached second image please?
If you're playing landlords you've created yourself could you possibly try this with a landlord created by the game? I did this with the Cahyaputri household. I got a pop up telling me how much they'd earn from the sale, I accepted that and then automatically I was sent to Manage Worlds. I got 2 different households I'd created to buy the property and sell it the same way and it worked, everybody got paid. It may be that there's an issue with new landlords, this would help narrow it down. Any images of the problem from your game would be really useful too.
It can also be helpful to reinstall For Rent. I had to do that recently as I had an issue paying bills as a tenant. I also found that for some reason, a tenancy works better if you move into a lot using the phone.
Also if anyone is having problems collecting rent there's a bug report here if you'd like to click Me Too on the first post on page 1 and add a reply if you'd like to do so, you should be prompted by a bug template to complete.
https://answers.ea.com/t5/Bug-Reports/OPEN-FR-Tenants-wont-pay-rent/td-p/13289161
There's another report here for the rental events toggle Off not working.
https://answers.ea.com/t5/Bug-Reports/OPEN-FR-Tenant-Events-still-happen-when-Rental-Unit-Events-are/m-p/13316432/highlight/true#M264686
