**Describe the bug** A clear and concise description of what the bug is. `onResizeStart` and `onResizeEnd` events are not running. **To Reproduce** Steps to reproduce the behavior: 1. Go to [codesandbox](https://codesandbox.io/s/react-spaces-resize-issue-p7h0i?file=/src/App.js) 2. Open console 3. Resize the blue left sider. 4. It doesn't print anything. **Expected behavior** When we resize, it should run the event passing size values. **Screenshots** Code available at https://codesandbox.io/s/react-spaces-resize-issue-p7h0i?file=/src/App.js