In the webbrowser, you currently need to double-click in order to open a folder, single-clicking only selects the folder. I'm a 30yo digital native and find this unintitive for browser-behaviour, especially since the selecting-functionality already exists in form of the checkboxes that appear when hovering, and I have witnessed many older folks taking a lot of time to figure out how to open a folder because of this. So I suggest getting rid of this second selecting-functionality, and open folders with just one click.

(I'm aware Google Drive has the same behaviour, Dropbox and OneDrive don't and I find it much more intuitive and practical)