That the labels for the apps get truncated so you can only read “Proton” plus the first letter of the app. I’m only able to distinguish based on the icons which isn’t great because Pass and Drive are similar colors, and Pass and VPN, and Drive and Calendar are similar shapes.
Now that you mention it… Yeah! I rename the icons to just “Mail, Calendar, Etc…”
On the other hand, when I install a file manager from Fdroid. It’s renamed to something generic that’s hard to tell apart from the factory installed apps.