Sections dashboard problems since upgrade to 2024.6.0/1

I have a dashboard with 4 columns that has been working great on versions prior to 2024.6.x, but after the upgrade I seem to loose the ability to render the 4th column.
The config is in the yaml, and if I switch to 3 column the cards from that 4th column do show below for a few moments, then disappear again. I switch the dashboard back to 4 columns, and again, the cards show for a few minutes then disappear again. It doesn’t matter on what card is there, and the column is there blank, so it recognizes it needs a placeholder.
Not sure what’s up, but going back to a version prior to 2024.6.x and everything is as expected again.