Hi @DragonAge_300905 they claimed this bug fixed in the most recent patch, but it isn't fixed for everyone.
I see from your post on the bug report that you found it :)
There are two workarounds currently afaik, one is to set the lot residential and then back to residential rental, but I wouldn't recommend that because that process is also bugged for many people in a way that completely breaks the lot!
The other workaround comes from @Brd709
I discovered last night that if you switch every unit back to 'shared' then assign the units to your space again, the correct rents now display instead of the 4 million + rent that's first displayed. It's a temporary solution but i found it worked ok for me.