Zoom widget not working

[Aeseir]

I recently upgraded our arcgis js package to 4.30 from 4.27.6, and now the Zoom buttons have stopped working.

I've also tried manually adding the zoom widget but that didn't fix the issue. I had a look at the examples on the arcgis js samples page and noticed they all use 4.30, yet zoom works there.

Any indication on what could be going on?

[JamesIng]

Did you also update the CSS to the matching version as well, just to eliminate any styling that might be interfering?