In Projects, columns heights are defined by the sum of all contents height of the biggest column, rather than a fraction of the viewport height. It default to 60vh when there is no cards to display.

As demonstrated in go-gitea#31726 (comment), an horizontal scrollbar can appears while dragging a card to a column from the right side, as the ghost card is animated to fit in. Force hidding the scrollbars using overflow:clip.

A vertical scrollbar can appears while dragging a card-out, when the column height is higher than the heght-viewport and the board is being reduced (quicker than its contents). Force hidding the scrollbars using overflow:clip.

…columns