SUMMARY
This code is problematic:

    Shortcut {
        //in case of explicit & the button manages it by itself
        enabled: !(RegExp(/\&[^\&]/).test(controlRoot.text))

It does not handle even what it's directly supposed to: an ampersand but not a double ampersand.
This snippet is duplicated across several controls. It should be fixed by rewriting into native (C++) code.

STEPS TO REPRODUCE
1. console.log(!(RegExp(/\&[^\&]/).test("Yaha && ha!")))

OBSERVED RESULT
false

EXPECTED RESULT
true

ADDITIONAL INFORMATION
Affected components are:

- Button.qml
- CheckBox.qml
- MenuBarItem.qml
- MenuItem.qml
- RadioButton.qml
- Switch.qml
- TabButton.qml
- ToolButton.qml