You notice that a Grid view is now split in two (there is one part that appears to be fixed and another part that, depending on the number of the columns, has a horizontal scrollbar).
How to change this back to the previous (default) behavior?
Any supported Clarity release.
Some columns are pinned.
Hover the mouse over one of the columns and click on its hamburger menu (three horizontal lines icon) and see unpin those pinned columns (choose Pin Column > No Pin).