@crinrict You can answer these questions (and more!) by following the instructions under the heading "Steps: How can we find the bug ourselves?"
[Edit] To answer frankly:
1) you can't "moo" platforms
2) you can replicate this bug by placing counters next to the pool without using "moo"
3) most impassable objects can be moved towards the pool ledge without using "moo" and simply holding down ALT
While on land, sims know they can't go there, simba.
The bug is specific to interactions available while swimming in pools.
@printfJess
1) I was talking about the objects (which I did specify)
2) I'm a volunteer and I don't have the time to try and replicate every single bug that is reported in here, especially if I have to build something for it. I usually try with questions for further clafiication.
3) That's why I asked if you used it cause placing with moo often causes issues with objects being placed over each other, could also happen with Sims and routing issues.
All good. I tested this in maaany different ways before deciding to post in bug reports. I wanted to ensure what I was encountering wasn't a user issue.
If you want to explore this bug further yourself, please follow the instructions on how to repeat; requires only base game to replicate. If you don't have the time then all good as well.
@printfJess I don't really 😉 Not into building at all and I would mess up.
Leaving this to EA to decide if they need more info.
