Can't enter house or lower walls

At one of my lots I can not enter the buildings, and in live mode i can not lower walls/flors (End/Page down). The up/down arrows top tight UI are not active either. Switching to build mode I can switch floors and the walls/stories work as expected. In live mode the entire build behaves as if my sim was visiting another lot and not yet knocked o their door.

I checked another lot to see if this is affecting the entire gameÆ/save, but that lot was normal in live mode.

On the problem lot I just had loads of animals dying. Unfortunately my mini-goats/sheep and chicken (maybe other small animals too, I did not check) age while I play another lot, so when I eventually come to play a lot, nearly all small animals have reached their final day and Grim comes to get them. I know this is a bug, and hopefully it will get fixed soon. On this lot Grim collected 2 mini goats and 3 chickens, and when there was just ne hen more to collect, Grim went inside the house. I wonder if there is a limit to hw many deaths Grim can handle per visit/day? And if so, if the final chicken (6th animal) who was ready to get snapped caused the weird effect on the builds? If so - how can I solve it? I tried restart my game, but it did not help. Grim did appear again to collect the last chicken, but the huse can still not be accessed by the sims living on this lot.

Any ideas woul be appreciated.