Grotto Cascade large disappears in corner with walls down

Just bought this kit and when I place the pretty waterfall rocks on the side of a pool they disappear!?  So does the pool stairs!  This is the whole reason I bought this!  Lesson learned, should have known it would also be broken!  I feel deceived by EA and Sims 4 team!  

Not exactly, items did not reappear when walls up, but I'll explore it more as I about quit playing because of all the bugs including this making it not fun anymore.

That's the object you mean though, right ?

The wall up part was only described at AHQ hence I adjusted the titles to fit. In the thread here the user said they had to go back and forth to make them show.

If it's the same object, it's best to post in that thread with your detailed experience and pics. 

Thanks.

Same object, different circumstances. I have not found them yet in 20+ worlds to take a screenshot yet. I don't want to place them anywhere else because I can not delete a disappearing object and can not place another object to replace it, stairs is what I am talking about.  I hope soon I can send a picture, but it will be of a disappeared object? 

Since you said the pool ladder was invisible for you too, do you have other invisible or not properly rendering objects too ?

No, not that I noticed.  Just the waterfall rocks and ladder disappears. 

Gave the ladders a test and they don't disappear for me. For the grotto cascade I can only see the walls down issue. If I have them on cut out, the rock shows but not the waterfall and with walls up I see everything.

What type of graphics card do you have ? Are you using DX9 or DX11 ?

dx11 and Nvidia G Force RXT 3070