The Proton Drive web app sorts folders in the left-hand file tree lexicographically but sorts files and folders in the right-hand folder content area numerically. Files and folders in the iOS/iPadOS app are sorted lexicographically.

Let’s assume I have a folder that itself has twenty folders, each named 1 to 20. The web app sorts them as follows in the left-hand folder tree:

1,10,11,12,13,14,15,16,17,18,19,2,20,3,4,5,6,7,8,9

However, the web app sorts them as follows in the right-hand folder content area:

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

This is confusing. The sorting method should be standardised across all areas of all apps. Should that standard be sorting numbers as strings, or sorting numbers as numbers? Personally, I think the latter makes more sense.