Copied icons in dash after application run

[3DRaven]

When you launch an application (as example firefox) using a pinned icon, a new icon is created at the bottom of the panel, and instead of a picture with this application, a gear icon is shown. Launching new instances of the application generates new icons next to the pinned one, and they also have a gear instead of the application icon.

Description: Ubuntu 24.04 LTS
Release: 24.04
gnome-shell-extension-ubuntu-dock:90ubuntu1

Expected: there should be only one icon per instance of application on the panel. Icons grouped. Used icons of application.

Instead: we have source pinned icon with properly application image and new grouped icons with gear image as icon at the bottom of panel.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: gnome-shell-extension-ubuntu-dock 90ubuntu1
Uname: Linux 6.8.9-5-liquorix-amd64 x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Thu May 23 11:02:31 2024
PackageArchitecture: all
ProcEnviron:
 LANG=ru_RU.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 XDG_RUNTIME_DIR=<set>
SourcePackage: gnome-shell-extension-ubuntu-dock
UpgradeStatus: No upgrade log present (probably fresh install)

[Dave Jones (waveform)]

Curiously, I've seen this issue with several Qt-based applications (Quassel, Veusz, and OpenSCAD) under noble, as reported in LP: #2044382, but I've not seen it with Firefox (which isn't Qt-based to the best of my knowledge?).

[3DRaven (3draven)]

It is not only Firefox, as example Jetbrains Intelli Idea too. Lot of apps