Unable to zoom in

What I did

Edited the Flying Bird tutorial. Zoomed out during the process.

What I saw

The field could be made smaller and smaller, but it was not possible to zoom back in. When zooming in, the tutorial text became large, but the main editing layer did not.

This might be a bad interaction of the browser/OS zooming gesture and the Candli scroll event.

Do you by chance use a touchpad on a laptop?