I updated to 3.0.2 and 1.12.3. When I went in to edit a page, the columns and blocks were no longer scrunched thin like before to fit the page, with the settings bar on the right. They were full size with extra margin side to side. I could see only the left portion of the page, and the settings bar was lost far to the right. No scroll button on the bottom to scroll to the right.
To see the settings bar on the right, I either had to move half the screen off the left side of the desktop and greatly widen the window, or use the command-minus buttons to shrink the window content so small I could barely read it.
It’s behaving now. The columns are scruched like they used to be and I can see the whole width of the edit page in my window. Huh. What did you do? Maybe you just touched it and Shazam! it righted itself!
Thanks. May you have a good 2021! I’ll call this problem closed now.