Bug: checkboxes in card not working properly

[bibitodaro]

Steps to reproduce the behavior

1. Go to board
2. Select existing card (or create a new one)
3. Add checkbox or write in existing checkbox list
4. Try adding a new checkbox item or move an existing item up / down
5. see error - when trying to add a new one it deletes a previous checkbox, or even a checkbox in a different list; when trying to move them up/down it moves other checkboxes instead of the selected one. Sometimes the entire card freezes and have to refresh page

Expected behavior

I expect to be able to add a new checkboxes without this affecting the rest of the content in the box.
I expect to be able to move an item up/down when clicking "move up/move down" instead of seeing checkboxes moving randomly when selecting these functions.

Screenshots (optional)

If applicable, add screenshots or a screen recording to elaborate on the problem.

Edition and Platform

• Edition: Personal desktop and browser (have tried and experienced the same issue in both)
• Version: v.8.0 on desktop
• Browser and OS: Chrome on Windows 11

Additional context (optional)

Add any other context about the problem here, and any notes about the severity:

• Sev 2: Affects major functionality with a difficult or non-obvious workaround - I can work around it by rewriting the content of the checkboxes but this is time consuming, non-obvious and non permanent either because the next time I need to move them or create a item the existing ones might get messed up again. I use this functionality for team meetings where we definitely need checkboxes for agenda and things to-do so it is an essential tool.