Toolbox Ubuntu 17.10 missing/tiny indicator icon with Gnome Shell

Hi there,

since my upgrade to Ubuntu 17.10, I am having problems displaying the indicator icon in the top right corner of the screen.

I realize that the Gnome Shell does not support indicator icons at all. But I have the extension "Ubuntu appindicators" enabled which works around this.

However, no Icon from the toolbox is displayed,  though the feature works for other apps (like Shutter or Tomboy Notes).

There is a workaround for this problem  several other applications have as well:

Insert following line into the .toolboxrc file:

export XDG_USER_DESKTOP=Unity

Unfortunately, the icon remains weirdly small and is hard to hit with the mouse

I attached a screenshot of my upper right corner

Any way to work around this?