Nextcloud desktop client always shows symbolic icon in Status Tray

Hi,

long-time observation here. Some apps such as the Nextcloud desktop client will always show the black/white symbolic icon in panel's Status Tray.

Request symbolic icons is disabled in the plugin settings. Likewise, Use monochrome icons is disabled in Nextcloud.

On other DEs I have seen colored icons, or at least a green checkmark on the white cloud icon. This doesn't seem to show in Xfce panel.

xfce4-panel-4.19.2, nextcloud-client-3.11.1

Thanks!