In Visual Studio 2022, hover over complex expressions no longer works. For example, if you hover over prop in tbl.prop, there is no tool tip. However, now when you hover over tbl, you will have a tool tip with a tree view where you can explore inside.
As a work-around, use Watch or Pin the expression from the root expression tool tip.
When the solution for updated behavior of Visual Studio 2022 arrives, a new release will be made.