Subject of the issue

I built a single parent widget (with the 'column' option set to '1'), with two child widgets nested inside it. When I resize the parent, the browser tab locks up. However, if I set 'column' to 2 or more, GridStack works.

Your environment

Version: 4.3.1
Browser: Brave (Chromium)
Kind: Occurs in both the HTML5 and Jquery versions

Steps to reproduce

1. Go to https://jsfiddle.net/98o6pcqw/
2. Grab the gray (parent) widget and resize it larger than it currently is.

Expected behavior

The parent widget should simply resize.

Actual behavior

The browsers tab locks up.