History: I have faced this same issue with Standard Notes (Trying to Install on MX Linux · Issue #1120 · standardnotes/forum · GitHub) and Joplin (Can't open on MX Linux - #8 by yogaturtle - Support - Joplin Forum) and now I am having the same issue with CrossClave In MX Linux the ‘–no-sandbox’ startup parameter does get the application running but security-wise it is not ideal.
I am also trying to get the Linux version running under Qubes OS using the Debian-10 Qube. The application does start briefly but is followed by a dialog that says ‘Account loading problem. There was a problem loading your account’ with a single ‘ok’ button. When I press this, on the main screen, it says ‘Something Didn’t Work!’ and then ‘Do us a favor, please close and reopen CrossClave to try again.’
Restarting the application does not work. This exact error is also present when I add the ‘–no-sandbox’ switch to the command line.