Upstream report: https://secure.phabricator.com/T5240 -- and below we have some debate on whether dragging cards in Chrome + OSX is possible or not, easy or not. More feedback from Mac users is welcome.
Original description:
On a board like https://phabricator.wikimedia.org/project/board/67/
scroll to bottom of needs triage and then try and move it right to the tracking column
It's impossible as the tracking column is off screen.
It should be possible to drag the card off screen.
Cf. https://lists.wikimedia.org/pipermail/wikitech-l/2015-October/083757.html:
My main trick for moving items between columns on a board that has a lot of columns is to zoom my browser out so far that the text is microscopic (and all the columns are visible). Then use the browser find feature (Ctrl-F) to highlight the task you want to move, so you can see it. Then drag it. For me, that's easier than coordinating the "scroll while dragging" operation.