"Double Click To Isolate" preference does not work
Using the direct selection tool to try and double-click your way to grabbing a grouped object within another group of grouped objects fails. It simply doesn't select any of the other elements. This is a paralysing bug that may well see me dumping my CC subscription and going back to Illustrator CS5 or 6. From what I read, this bug is old so why hasn't Adobe fixed it?
Attached is the file with the bug. Try double-clicking the green nodes on the chart with the direct selection tool. It should grab all the dots. Then expand out and grab the other grouped elements. It does not.
I'm on the latest version of Catalina using the latest version of Illustrator.