Expander row: Rotate on the right
The expander row arrow currently rotates 180 degrees on the left side, which feels odd to me. I'd rotate it on the right instead (counterclockwise for expanding, clockwise for closing).
Edited by Tobias Bernard
The expander row arrow currently rotates 180 degrees on the left side, which feels odd to me. I'd rotate it on the right instead (counterclockwise for expanding, clockwise for closing).