To clarify I am on xbox series x with all packs and 5 kits.
I was able to close and restart the game to fix this bug but it was concerning so I thought I would make a report anyways.
So my sims were on vacation before the update that added the "nature's calling" event, and after the update they still were. I played for a while and then the vacation ended. I ended the vacation and sent them home as normal.
When loading back onto my sims home lot I realized that all ui at the bottom of the screen was invisible, still there, but invisible. I could still use the controls to pause and unpause the game, and I regained control of my cursor by using the toggle cursor button on my Xbox controller, I initially could not use the cursor until I did this.
All the ui at the top of the screen was unaffected except for the build mode option was greyed out, and when i hovered over it it said i could not build on this lot (the same message you get when you are on a vacation rental lot. So even tho my sims were on their home residential lot, i was still blocked from using build mode. That may be a separate bug in of itself.
So the event tab, holiday tab, the manage worlds, free cam, was all unaffected.
The picture of my active sim in the bottom left, notebook, phone, calender, the play and pause buttons, aspirations all the way to the retail management tab, where all invisible, but I could still hover over them and click. Clicking on anything that would normally pull up a menu (like the school/career tab) would not visibly show anything. I should also mention the xbox controls that usually are in the top right were also gone.
I then went to manage worlds to reload my household and see if that was the issue. It was not. I clicked on my household and reloaded it twice and the controls were still invisible.
I then went to the screen that shows all the world options, and was met with a completely white screen. At that point I exited to main menu without saving, hoping this would resolve it. I was then met with a completely blue main screen.
At that point I closed the game entirely, and reloading seemingly fixed the issue. Upon reload I realized that the Emily pop up started again, even though I went to my game settings and saw that I had the option toggled off. Along with this the help center icon I had previously turned off was now toggled on again. Once again this part may be a separate bug entirely.
I am unsure if this was caused by my sims going on vacation, me turning off Emily, or disabling the help center icon, or none of the above. But hopefully this helps someone.