- "tap" mode prevents sending a message on release
- from Properties reference - Open Stage Control
Advanced syntax blocks (@{}, OSC{}, JS{{}} and #{}) are resolved at the matrix' scope (ie @{this.variables} returns the matrix' variables property, not its parent's)
If you want to have scoped advanced syntaxes you'll need to use a matrix of clone widgets instead (see clones_and_variables.json example from this thread.
EDIT: after reading point 2 again, I think I missed the issue.
Just to clarify, @{menu.values} is not related to the menu's actual value.
the props(jjs script) is running for every element in the matrix
Yes, that's how this property works, it's evaluated for each child (with a different different value for $ in JS blocks)