I noticed bug reporting advice too late.
User: danaske
World: Firestorm 30.
Browser: Chrome for Linux version 146.0.7680.153 (Official Build) (64-bit).
Time: Every time I use function.
Bug description: Missing option/button to delete saved formations. See previous post for more details.
Steps to reproduce: Save formation. No visible button to delete one that is saved. I tried game with no scripts, and built-in Battle Simulator has the same button to save formation. That is how I learned that it is not add on script problem, but game function.