here we used to see a list properties of node 'a'.
This works fine with first run. After returning the result, now the Cypher script appears above the graph. Something in the new version called 'Frame'.
Now if you go back to main Cypher pane (above the Frame) then a. doesn't show any list of properties. It shows up only when you have two dots. Then again you need to delete the extra dot other wise you will get syntax error.
Here is a pictorial description:
Q: Is MacOS Big Sur version supported?