SUMMARY Audacity could not start because of pango_font_description_set_size issue. STEPS TO REPRODUCE 1. Install audacity (pkcon install audacity, or apt instal audacity) 2. run audacity from Terminal 3. There's an error, infinite loop. OBSERVED RESULT (Audacity:14491): Pango-CRITICAL **: 23:25:13.271: pango_font_description_set_size: assertion 'size >= 0' failed (infinite loop goes on..) EXPECTED RESULT Runs well? SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE Neon User Edition KDE Plasma Version: 5.14.5 KDE Frameworks Version: 5.54.0 Qt Version: 5.11.2 ADDITIONAL INFORMATION Audacity(2.2.1 from Ubuntu repository) works well on Kubuntu 18.04 and 18.10. Only KDE Neon has this issue. However, there's a Snap package for Audacity the version of which is 2.3.0, works on KDE Neon.