AssetSelector.qml : the dropdown should be position either above or below the combo box based on available area

[Khushboo-dev-cpp]

Description

Also doesn't seem to be scrollable even on desktop

[caybro]

Yeah there's something wrong with the AssetSelector popup height; it never scrolls; I can reproduce even under Storybook

[caybro]

The placement is most likely wrong because we position the StatusDropdown manually:

StatusDropdown {
  y: root.height + 4