Win10 - cryptomator process starts but application not running / hangs

Hello, i have installed 1.7.3 on Win10 Enterprise (21H2).
The installation routine succeeded w/o error
after launching the cryptomator app (double click on icon) there is some moment of activity, but then nothing else happens - i.e. no app window shows up - no tray icon appears
in process explorer i see two processes are running - both named cryptomator

(btw. with version 1.7.2 - my first try to get cryptomator running - the same behaviour was observed)

Hi.
Anything suspicious in the log file?

19:33:49.252 [main] INFO org.cryptomator.common.Environment - user.home: C:\Users\bernjeo6
19:33:49.269 [main] INFO org.cryptomator.common.Environment - java.library.path: C:\Program Files\Cryptomator;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\Program Files (x86)\Zulu\zulu-8-jre\bin;C:\Program Files\Zulu\zulu-8-jre\bin;…;C:\Program Files\Cryptomator\app;.
19:33:49.318 [main] INFO org.cryptomator.common.Environment - user.language: de
19:33:49.318 [main] INFO org.cryptomator.common.Environment - user.region: null
19:33:49.318 [main] INFO org.cryptomator.common.Environment - logback.configurationFile: null
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.settingsPath: ~/AppData/Roaming/Cryptomator/settings.json
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.ipcSocketPath: ~/AppData/Roaming/Cryptomator/ipc.socket
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.integrationsWin.keychainPaths: ~/AppData/Roaming/Cryptomator/keychain.json
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.logDir: ~/AppData/Roaming/Cryptomator
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.loopbackAlias: cryptomator-vault
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.pluginDir: ~/AppData/Roaming/Cryptomator/Plugins
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.mountPointsDir: ~/Cryptomator
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.minPwLength: null
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.appVersion: 1.7.3
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.buildNumber: msi-4367
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.showTrayIcon: true
19:33:49.318 [main] INFO org.cryptomator.common.Environment - cryptomator.p12Path: ~/AppData/Roaming/Cryptomator/key.p12
19:33:49.318 [main] INFO o.cryptomator.launcher.Cryptomator - Starting Cryptomator 1.7.3 on Windows 10 10.0 (amd64)
19:33:49.421 [main] INFO org.cryptomator.ipc.Server - Spawning IPC server listening on socket C:\Users\bernjeo6\AppData\Roaming\Cryptomator\ipc.socket

to me - nothing suspicious in there

btw: the ipc.socket file in the log directory is an empty file (0Kb) … i cannot judge if this is normal or not