JS Error after dropping an item on Grid

[SebastianKuehnau]

Description

vaadin-grid element throw a java script error in cosole when dropping an element on it

Expected outcome

No Error message in JS Console

Actual outcome

Console is showing an error message

map:12 There seems to be an error in the Vaadin Grid:
Cannot read properties of undefined (reading 'dragDisabled')
Please submit an issue to https://github.com/vaadin/vaadin-grid/issues/new!
console.error @ map:12

Live demo (optional)

Screen.Recording.2021-10-20.at.11.49.44.mov

Minimal reproducible example

https://github.com/SebastianKuehnau/sebak-demo-app/blob/22.0.0.alpha8/src/main/java/org/vaadin/sebastian/view/MapView.java

Steps to reproduce

Clear steps describing how to reproduce the issue.

1. start the application with mvn spring-boot:run
2. go to http://localhost:8080/map
3. drag item from upper grid and drop on lower grid

Environment

• v22.0.0alpha8
• OSX 11.6

Browsers affected

• Chrome
• Firefox
• Safari
• Edge