Run this:
It’s a UI debug tool - click on Pick Hit-Testable Widgets inside.
Things may look a tad strange from now on. Run the project, show the menus and mouse over stuff. What do you hit when you mouse over the button while the buy menu is up:
My bet is that the buy menu is simply on top and blocks the interaction. It’s either full screen or has an element that consumes clicks. Can we see the hierarchy of the menu?
Alternatively - a quick fix could be as easy as giving the Buy menu lower zOrder than the clickable 1-6 menu.
zOrder defaults to 0, so the most recent widget added to viewport ends up on top. If you set this value to 1 for the 1-6 menu, it may just work fine as is.