Qt app tray icon missing

The Synology Drive program opens in the background at startup if I launch it with:
QT_STYLE_OVERRIDE=Fusion QT_QPA_PLATFORM=xcb synology-drive

But its system tray icon is missing, and I get the following messages:

debug.message: Cannot find path by key "user_cloud_station_app_path"
debug.message: Cannot find path by key "user_cloud_station_data_path"
debug.message: Cannot find path by key "user_cloud_station_working_dir_path"
debug.message: Cannot find path by key "user_cloud_station_drive_ui_path"

Any suggestions on how to get the tray icon to load for this Qt app?

For anyone that stumbles on this, the tray icon loads consistently if you use ‘QT_STYLE_OVERRIDE=Fusion QT_QPA_PLATFORM=xcb synology-drive autostart’ for your startup command. That worked for me.