Switching pages and also restarting Blocs doesn’t remove them.
Doesn’t remove the classes? I thought the problem was the classes didn’t show in the layer tree?
The classes can be removed in the class token field in the inspector sidebar.
I can’t help thinking that the Blocs CSS Grid is getting even more complicated, and I would find it more intuitive to add an extra pair of new Div Brics called CSS Grid Container and CSS Grid Item. Then you would add a CSS Grid Continer already with all required settings in place, and then add in Grid Items as required without any auto generation of Grid items and an unrequired additional empty Row..
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