When visible columns are resized to small extremes the scaling becomes brittle. In the demo it appears to always go to the extremes while in some live-code it looks like signs are wrapping around (columns start to size off into the wrong direction).

Reproducing:

• Make the columns examples in the Demo visible
• Resize the window to an extremely small size (ie. as small as it will go)
• Expand window back to a reasonable size

Image of results (from demo):