ResizableLayout seems to.. not work (as expected)

[jasonpolites]

Hi folks,

I hadn't looked at Sencha for a long time, but when hunting for a new JS UI lib I thought I'd give it another look. The first thing I randomly chose was the ResizableLayout demo, but it seems kinda broken.

Environment
Windows 10
Google Chrome 85.0.4183.121 (Official Build) (64-bit)

Observed Behavior
If you drag the bottom section entitled Dock Bottom downwards a little and let go, it disappears completely. Also if you drag it up it seems to land in unexpected places

Expected Behavior
Not really sure. I guess I expected it to smoothly resize? It seems generally jank to me