Testing Xubuntu 18.04 daily. If have several icons in the system-tray, one of which is a battery icon.
Please see: http://i.imgur.com/hOxT4MR.png

The battery icon shows up, even when in the power manager application the toggle for system-tray icon is turned off.
When I turn that setting (tab general, appearance*) on a second, identical battery icon appears in the system tray.
Please see: http://i.imgur.com/QfDHl9Y.png

The first icon responds to taps or left mouse clicks in the touch-pad of the laptop by showing a menu/options.
The second icon does not respond to taps or left mouse clicks. It does however respond to right mouse-click: it then shows the menu/options which the other icon shows on taps and left mouse-clicks.

I would expect there to be only one battery icon; which ought to be managed through the setting in power manager.
If two icons are present, I would expect them to respond identically to the identical user actions.

Is there any more information I can provide?
If this is not the right place to report this issue, please refer me to the right place.
Thank you.

* Please note: my interface is not in English; the actual English titles/terms may be different.
Also note: I have not been able to find the version number of the power manager I am using; I could not find an "about"menu item in its interface.

Linux Xubuntu-18-04 4.15.0-10-generic #11-Ubuntu SMP Tue Feb 13 18:23:35 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

  *-battery
       description: Zinkoxide Battery
       product: CRB Battery 0
       vendor: -Virtual Battery 0-
       physical id: 1
       version: 08/08/2010
       serial: Battery 0
       slot: Fake
  *-power UNCLAIMED
       description: OEM Define 1
       product: OEM Define 5
       vendor: OEM Define 2
       physical id: 2
       version: OEM Define 6
       serial: OEM Define 3
       capacity: 75mWh

xubuntu-18-04               
    description: Notebook
    product: 80UD (LENOVO_MT_80UD_BU_idea_FM_Lenovo ideapad 110-15ISK)
    vendor: LENOVO
    version: Lenovo ideapad 110-15ISK
    serial: MP16LZHW
    width: 64 bits