Even with the temporary solution I get a blank window
$ export QTWEBENGINE_CHROMIUM_FLAGS="–no-sandbox"
$ insync start --debug 3 --no-daemon
/bin/sh: /usr/lib/insync/libreadline.so.8: no version information available (required by /bin/sh)
INFO 2021-10-28 10:58:17,481 [mainlogs:_log_run:139] Core(app_version=3.5.4.50130, platform=Linux-x86_64-opensuse-tumbleweed/20211024) initialized
DEBUG 2021-10-28 10:58:17,516 [workbase:__init__:207] INIT App()
DEBUG 2021-10-28 10:58:17,518 [workbase:__init__:207] INIT Shell()
DEBUG 2021-10-28 10:58:17,519 [workbase:__init__:207] INIT NoticeFeed()
DEBUG 2021-10-28 10:58:17,519 [workbase:__init__:207] INIT ProgressFeed()
DEBUG 2021-10-28 10:58:17,520 [workbase:__init__:207] INIT Telemetry()
DEBUG 2021-10-28 10:58:17,521 [workbase:__init__:207] INIT ActivityNotification()
DEBUG 2021-10-28 10:58:17,522 [workbase:__init__:207] INIT LicenseFeed()
DEBUG 2021-10-28 10:58:17,622 [workbase:__run:245] RUN App()
DEBUG 2021-10-28 10:58:17,624 [workbase:__run:245] RUN Shell()
DEBUG 2021-10-28 10:58:17,625 [workbase:__run:245] RUN NoticeFeed()
DEBUG 2021-10-28 10:58:17,626 [workbase:__run:245] RUN ProgressFeed()
DEBUG 2021-10-28 10:58:17,627 [workbase:__run:245] RUN Telemetry()
DEBUG 2021-10-28 10:58:17,628 [workbase:__run:245] RUN ActivityNotification()
DEBUG 2021-10-28 10:58:17,628 [workbase:__run:245] RUN LicenseFeed()
DEBUG 2021-10-28 10:58:17,630 [workbase:__init__:207] INIT RegisterMachineWork(machine_id='wgNpmKaWI_BFIU9XVyCCZEd7WNI=')
INFO 2021-10-28 10:58:17,638 [main:start_core:49] core started
INFO 2021-10-28 10:58:17,638 [unix_socket_server:start:93] unix socket server thread start
DEBUG 2021-10-28 10:58:17,640 [workbase:__run:245] RUN RegisterMachineWork(machine_id='wgNpmKaWI_BFIU9XVyCCZEd7WNI=')