After new upgrades, Opera crashes due sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc:**CRASHING**:seccomp-bpf failure in syscall 0230 error. One workaround is to edit the laucher as

opera --no-sandbox

To check sandbox status via address bar

opera://sandbox/

EDIT 2.3.2020 Opera fixed with new release (67.0.3575.31)