On the PTS right now homes have the same Item Limit as they do on Live, but manors (700 slots with ESO+) have had the Trophy collectibles category increased to 110.
Went to the pts and was dissapointed the “aquariums” could not be edited. Nothing could be removed or added to them. I was going to purchase the house just for the “aquariums” but won’t be now. The one you can swim in doesn’t even let you go below the surface of the water.
I couldn’t decorate it. The water wall wouldn’t let me put anything in or take anything out.
Sounds like you might have had that option where it prevents things clashing through floors and walls switched on (Sorry I forgot the name of the option but I’m sure someone knows the option I mean, on Xbox it’s default button is Y)
Update: found the option I was trying to name! Surface Drag option, sounds like you may have left that on