Collections Extra - Nothing showing in grid

I’ve just updated a couple of sites to 2.8.3 and now Collections are not showing anything in the mgr grid. If I make the Parent into a Document rather than a Collection the children are shown in the Site Tree. The front end is working fine

Have tried with PHP 7.4, 8.0 and 8.1.

Basically Collections should work with modx 2.8.3.

Are there any errors in the error log?
Maybe try to reinstall the extra.