Flatpak version still uses default icon on Wayland

[MoralCode]

Version info

• OS: Kubuntu 24.04 LTS
• Build: 2102

Description

The flatpak app shows up in the KDE Plasma system tray with the default wayland icon

Steps to reproduce

Steps to reproduce the behavior:

1. install app from flathub
2. open it

Expected behavior

app icon is shown in system tray when the app is running

Screenshots

Potential solution

A post on the Fedora forums offers some solutions to this for different DE's. It seems like some people are having success by manually specifying the name of the app's .desktop file when it is different from the name of the installed binary, and suggesting that developers need to manually set this value if it is different from the binary name.

It seems like flatpak names apps (and their desktop files) with reverse domain notation, so i strongly suspect this as being the cause (see the flathub repo for sublime merge at https://github.com/flathub/com.sublimemerge.App/tree/master)

Maybe theres a way to allow the flatpak builds to set this name independently?