Cannot create vault- New Cryptomator install on lubuntu 19.04

I’ve tried both the PPA install and the Appimage (1.4.15-x86_64). The app launches and appears to be ready to go, but when I try to create a new vault, the window opens to facilitate naming the vault, but nothing happens beyond that. If I enter a name and click “Save”, the window closes and no vault/file is created.
When I launch the program in verbose mode, here is the log:

13:16:18.055 [main] DEBUG org.cryptomator.common.Environment - user.language: en
13:16:18.063 [main] DEBUG org.cryptomator.common.Environment - user.region: null
13:16:18.064 [main] DEBUG org.cryptomator.common.Environment - logback.configurationFile: null
13:16:18.064 [main] DEBUG org.cryptomator.common.Environment - cryptomator.settingsPath: ~/.config/Cryptomator/settings.json:~/.Cryptomator/settings.json
13:16:18.064 [main] DEBUG org.cryptomator.common.Environment - cryptomator.ipcPortPath: ~/.config/Cryptomator/ipcPort.bin:~/.Cryptomator/ipcPort.bin
13:16:18.064 [main] DEBUG org.cryptomator.common.Environment - cryptomator.keychainPath: null
13:16:18.064 [main] DEBUG org.cryptomator.common.Environment - cryptomator.logDir: ~/.local/share/Cryptomator/logs
13:16:18.064 [main] DEBUG org.cryptomator.common.Environment - cryptomator.mountPointsDir: ~/.local/share/Cryptomator/mnt
13:16:18.572 [main] DEBUG org.cryptomator.common.settings.SettingsProvider - Attempting to load settings from /home/user/.config/Cryptomator/settings.json
13:16:18.723 [main] INFO org.cryptomator.common.settings.SettingsProvider - Settings loaded from /home/user/.config/Cryptomator/settings.json
13:16:19.425 [main] INFO org.cryptomator.launcher.FileOpenRequestHandler - Unable to setOpenFileHandler, probably not supported on this OS.
13:16:19.467 [main] INFO  org.cryptomator.launcher.Cryptomator - Starting Cryptomator 1.4.15 on Linux 5.0.0-32-generic (amd64)
13:16:19.685 [main] INFO  o.c.launcher.IpcProtocolImpl - Received launch args: --verbose
13:16:20.364 [JavaFX Application Thread] INFO  org.cryptomator.launcher.Cryptomator - JavaFX application started.
13:16:21.549 [JavaFX Application Thread] INFO  o.c.ui.controllers.MainController - Unable to setPreferencesHandler, probably not supported on this OS.
13:16:24.465 [JavaFX Application Thread] WARN  o.c.ui.controllers.MainController - Ignoring attempt to add vault with invalid path: --verbose
13:16:24.742 [JavaFX Application Thread] INFO  o.c.ui.controllers.WelcomeController - Current version: 1.4.15, lastest version: 1.4.15

Ehm, seems like your “verbose” flag is at the wrong place? Cryptomator does not use any command line flags. At least not the GUI.

That doesnt really address the problem I mentioned. The problem existed regardless of booting by clicking icon, or CLI…with or without -verbose.
Regardless, just rebooting after install fixed the issue,