GUI button image elements missing in Linux and Windows 8.1

[Jun Lei]

System Details:

• Operating System: Linux

• Distro(For GNU/Linux and BSD users): OpenSUSE Tumbleweed 20220222

• Desktop Environment(For GNU/Linux and BSD users): KDE Plasma 5.24.1; KDE Frameworkds 5.90.0; X11

• Persepolis Version: 3.2.0

• How do you install Persepolis?: From the OpenSUSE linked repository listed on the Persepolis Download Manager website.
  https://software.opensuse.org/download.html?project=home:hayyan71&package=persepolis
  persepolis from: home:hayyan71 project
  Operating System: openSUSE Tumbleweed 20220222
  KDE Plasma Version: 5.24.1
  KDE Frameworks Version: 5.90.0
  Qt Version: 5.15.2
  Kernel Version: 5.16.10-1-default (64-bit)
  Graphics Platform: X11
  Processors: 4 × Intel® Core™ i5-2400 CPU @ 3.10GHz
  Memory: 7.7 GiB of RAM
  Graphics Processor: AMD OLAND

• Please attach log files if crash or paste error message
  N/A

Issue Description and steps to reproduce:
GUI is missing image elements in the buttons.
Steps:
1) Install Persepolis Download Manager from the standard distribution repository.
2) Open Persepolis Download Manager normally.
- GUI buttons image elements missing.
3) Issue appears in multiple Linux distributions. (Debian also.)
4) Issue appears in Windows 8.1.

OpenSUSE_HardInfo_Report.zip