Can't run without disabling sandboxing (LINUX)

[OfficialRuby]

Trying to run this program on my Debian 10 stable machine resulted in the problem below

[31766:1128/034954.208147:FATAL:setuid_sandbox_host.cc(158)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /tmp/.mount_eDEX-U9U8oPM/chrome-sandbox is owned by root and has mode 4755.
Trace/breakpoint trap

Terminal output while program is running with sandbox disabled

user@debian:~/edex$: ./eDEX-UI-Linux-x86_64.AppImage --no-sandbox
▶ start Starting eDEX-UI v2.2.3
ℹ info With Node 12.16.3 and Electron 10.1.6
ℹ info Renderer is Chrome 85.0.4183.121
▶ Startup Initialized timer...
ℹ info Base config dir is /home/webdev/.config/eDEX-UI
☐ pending Mirroring internal assets...
☐ pending Loading settings file...
☐ pending Resolving shell path...
ℹ info Shell found at /usr/bin/bash
✔ success Settings loaded!
☐ pending Creating new terminal process on port 3000
✔ success Terminal back-end initialized!
☐ pending Starting multithreaded calls controller...
✔ success Multithreaded controller ready
ℹ info Creating window...
ℹ info Multithread worker started at 11580
☒ complete Frontend window created!
… watching Waiting for frontend connection...
ℹ info Multithread worker started at 11581
ℹ info Multithread worker started at 11583
[11543:1128/035836.859442:ERROR:gl_utils.cc(316)] [.RendererMainThread-0x11b161de5000] GL_INVALID_OPERATION: Framebuffer is incomplete.
[11543:1128/035836.863385:ERROR:gl_utils.cc(316)] [.RendererMainThread-0x11b161de5000] GL_INVALID_OPERATION: Framebuffer is incomplete.
[11543:1128/035836.867648:ERROR:gl_utils.cc(316)] [.RendererMainThread-0x11b161de5000] GL_INVALID_FRAMEBUFFER_OPERATION: Framebuffer is incomplete.
[11543:1128/035836.871069:ERROR:gl_utils.cc(316)] [.RendererMainThread-0x11b161de5000] GL_INVALID_FRAMEBUFFER_OPERATION: Framebuffer is incomplete.
[11543:1128/035838.021164:ERROR:gl_utils.cc(316)] [.RendererMainThread-0x11b161de5000] GL_INVALID_FRAMEBUFFER_OPERATION: Framebuffer is incomplete.
✔ success Connected to frontend!
◼ Startup Timer run for: 16.53s
ℹ info Resized TTY to 097 020
[11543:1128/035842.355455:ERROR:gl_utils.cc(316)] [.RendererMainThread-0x11b161de5000] GL_INVALID_FRAMEBUFFER_OPERATION: Framebuffer is incomplete.
[11543:1128/035842.355920:ERROR:gl_utils.cc(316)] [.RendererMainThread-0x11b161de5000] GL_INVALID_FRAMEBUFFER_OPERATION: Framebuffer is incomplete.
ℹ info UpdateChecker: Running latest version.
✖ error TypeError: Cannot read property 'en' of undefined: Uncaught TypeError: Cannot read property 'en' of undefined
⬤ debug at /tmp/.mount_eDEX-UUDklp3/resources/app.asar/node_modules/xterm-addon-ligatures/lib/xterm-addon-ligatures.js 9:485
✖ error TypeError: Cannot read property 'en' of undefined: Uncaught TypeError: Cannot read property 'en' of undefined
⬤ debug at /tmp/.mount_eDEX-UUDklp3/resources/app.asar/node_modules/xterm-addon-ligatures/lib/xterm-addon-ligatures.js 9:485

[wrac4242]

Regarding the sandbox issue, check #588 and especially this comment.
copied from post #889