W icon on BoxBuddy exported apps?

I’m trying to install a number of GUI apps in the Fedora container and then export them to the host menu. It works, but for some reason many (but not all) of the apps have a generic “W” icon in the taskbar. For example, here’s Krusader’s mini icon at the top left of its window (btw the App isn’t available as a Flatpak).

image

And here’s the dock icon for two apps:

image

If I hover over the Dock icon, I see the correct name of the application, but it’s weird to see that W.

Any ideas what is going on?

This is the generic wayland icon, maybe boxbuddy is confused? Might be worth filing an issue with them: GitHub - Dvlv/BoxBuddyRS: A Graphical Interface for Distrobox