In Microsoft Edge Version 82.0.456.0 there are few issues
When I create a new note in a Collection, it's yellow by default. I have no idea why it's yellow and how to change the color.
There is a "select all" option to select all of the items in a Collection at once but it's somewhere that it's hard to use. it should appear in the right-click option on each Collection item or when user start selecting one Collection item, "select all" option should show up at top.
I've recorded a quick demonstration video to show this all: