Ah, just realised that the bug refers to any component. Actually the
problem is, that this is due to the way a MouseArea works. All
components you listed here are derived from AbstractButton, and that
component also has pressAndHold() signal. Now, that signal is a
forwarded signal from the MouseArea the component uses. And here comes
the problem: MouseArea does NOT emit clicked event if the pressAndHold
signal is connected/implemented. And we have that. So a release after a
long press actually causes a pressAndHold to be emitted, and clicked
signal to be suppressed. This is a behaviour we cannot really change.

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https://bugs.launchpad.net/bugs/1365471

Title:
  Long-tapping doesn't work on any control

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