I have multiple statblocks, all ordered in subfolders, themselves having subfolders.
When opening specific subfolders (detailed below), they dropdown open as expected. However, the first element is duplicated and appears twice : when they're opened or closed, both arrows animate to signify they're being open at the same time.

Most of these are empty subfolders for now, but it has been shown to work with ones that aren't empty ; in this case, the entire content of the subfolder is duplicated in he UI as well. Once open, the folders cannot be interacted with anymore, regardless of if they've been closed or open. Their content is still interactible and lead to the same expected item management window.   More importantly, when the parent subfolder gets closed again, the dropdown closes, except for the duplicate, staying out and visible. Spamming the dropdown to open and close it will generate even more duplicates.

  Worse, it's contagious : under specific circumstances, the bugged subfolders will duplicate on their own.
This happens when a bugged subfolder is duplicating ; all the duplicated subfolders hidden down under in the scrollable sidebar will duplicate as well.

This doesn't seem to be consistent however, the only way I managed to make it happen was to open a bugged subfolder down the sidebar, scroll up untill I can't see it, then another visible bugged subfolder. When I scrolled back down, the other subfolder was duplicated even more.

Steps to Reproduce

1. Open the statblock management sidebar
2. Navigate to the bugged subfolder by opening the corresponding dropdowns (see above)
3. Open the subfolder : the first child is already duplicated when opening. It cannot be interacted with twice.
4. Close the subfolder : the first child stays in the list and doesn't disappear.
5. Repeat step 3 and 4, the child keeps duplicating over and over.

  When it comes to duplicating different subfolders at once :

1. Open the statblock management sidebar
2. Navigate to a bugged subfolder down the sidebar by scrolling down
3. Open the subfolder : the first child is already duplicated when opening.
4. Close the subfolder : the first child stays in the list and doesn't disappear.
5. Repeat step 3 and 4, the child keeps duplicating over and over.
6. Scroll back up to another bugged subfolder, making sure the previous one is hidden in the scrollable element.
7. Open and close the bugged subfolder to duplicate its first child multiple times
8. Scroll back down to the previous bugged subfolder : its child has been duplicated even more, along the current duplicated child.

Operating System

Windows

Browser

Firefox

Related Entity

This bug is consistent with specific subfolders. I made a tree of folders with each root ending up in a similar structure, 3 subfolders : Shaping, Speech and Wild. For now, each of these folders are completely empty and lead to no statblock ; the goal being to fill them later.   Here are the subfolders that I found in my tree that trigger the bug :

• Cards/Verbs
• Idioms/Essence/Essence
• Idioms/Essence/Fracture
• Idioms/Flux
• Idioms/Matter/Compound/Steam
• Idioms/Matter/Compound/Substance
• Idioms/Matter/Deepened/Lightning
• Idioms/Matter/Elemental/Water
• Idioms/Matter/Matter
• Idioms/Mind/Chaos
• Idioms/Mind/Will

  I can't seem to find a consistent parameter between those folders.