A little more info,
I know that third party plugins are not Scirra's problem, but I though it still might give some clues to go on...
On any of the panels except Permissions and Settings:
With both Scirra's and iunkin's:
Click any hyperlink - the Charms will close
Click anywhere on a blank area - the Charms will close
Click the Back button - the Charms will close
With other options available in iunkin's:
Click the Upgrade, or Reset buttons - The Charms will Close
Click either of the Audio sliders - The Charms Does Not close - but the the command is ignored