As of today Ardour 9 crashes with:
Ardour9.8.0 (built using 9.8 and GCC version 10.2.1 20210110)
Ardour: [INFO]: Your system is configured to limit Ardour to 1048576 open files
Ardour: [INFO]: Loading system configuration file /opt/Ardour-9.8.0/etc/system_config
Ardour: [INFO]: Loading user configuration file /home/arjen/.config/ardour9/config
Ardour: [INFO]: No H/W specific optimizations in use
Ardour: [INFO]: Loading plugin meta data file /opt/Ardour-9.8.0/share/plugin_metadata/plugin_tags
Ardour: [INFO]: Loading plugin statistics file /home/arjen/.config/ardour9/plugin_metadata/plugin_stats
Ardour: [INFO]: add_lrdf_data '/home/arjen/.config/ardour9/rdf:/opt/Ardour-9.8.0/share/rdf:/usr/local/share/ladspa/rdf:/usr/share/ladspa/rdf'
Ardour: [INFO]: read rdf_file 'file:///usr/share/ladspa/rdf/ladspa.rdfs'
Cannot install SIGPIPE error handler
Ardour: [INFO]: Loading default ui configuration file /opt/Ardour-9.8.0/etc/default_ui_config
Ardour: [INFO]: Loading user ui configuration file /home/arjen/.config/ardour9/ui_config
Ardour: [INFO]: Loading 471 MIDI patches from /opt/Ardour-9.8.0/share/patchfiles
Ardour: [INFO]: Loading color file /opt/Ardour-9.8.0/share/themes/dark-ardour.colors
Ardour: [INFO]: Loading ui configuration file /opt/Ardour-9.8.0/etc/clearlooks.rc
Ardour: [INFO]: Loading bindings from /home/arjen/.config/ardour9/ardour.keys
Loading ui configuration file /opt/Ardour-9.8.0/etc/clearlooks.rc
Ardour: [INFO]: CPU vendor: AuthenticAMD
Ardour: [INFO]: AVX capable processor
Ardour: [INFO]: AVX with FMA capable processor
Ardour: [INFO]: AVX512F capable processor
Ardour: [INFO]: CPU brand: AMD Ryzen 7 PRO 7840HS w/ Radeon 780M Graphics
Ardour: [INFO]: Detecting Audio/MIDI Devices
Found nothing along /home/arjen/.config/ardour9/templates:/opt/Ardour-9.8.0/share/templates
Set cursor set to default
Established under name 'Ardour-43193'
Got SIGTERM, quitting.
'Ardour9 --disable-plugins -O' terminated by signal SIGSEGV (Address boundary error)
Both with an existing project and when creating a new session