Complete loss of function after using the "Add Item" menu in planner

[iceaquilegia]

How to replicate:

1. Click "Add Item" either select T-Doll or Weapon
2. Either select a T-Doll or a weapon from the drop down menu and complete the setup to add the item OR x out of the menu at any point prior to completing the setup.

After doing this all links and buttons are no longer functional on the website, reloading the web page solves the issue.
Tested on Chrome, Edge and Firefox and got the same problem in all 3