Touchpad controls are not shown in System Settings

[w-sky]

The touchpad of this laptop is working fine from the beginning, however the System Settings application at "Mouse & Touchpad" will show only very basic mouse configuration options:

Primary button left/right
Double-Click speed

I can not set the options about two-finger scrolling, tapping, edge, nor even pointer speed.
This seems to be a unity-control-center bug because the Gnome Settings app does show the touchpad controls.

OS: Ubuntu 19.10 (standard version) with Unity desktop added after installation

Here is some info about the device:
Notebook: Asus X571

/proc/bus/input/devices
N: Name="ELAN1200:00 04F3:3104 Touchpad"
P: Phys=i2c-ELAN1200:00
S: Sysfs=/devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-1/i2c-ELAN1200:00/0018:04F3:3104.0001/input/input11

xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ ELAN1200:00 04F3:3104 Touchpad id=11 [slave pointer (2)]

xinput list-props 11
Device 'ELAN1200:00 04F3:3104 Touchpad':
    Device Enabled (198): 1
    Coordinate Transformation Matrix (200): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
    libinput Tapping Enabled (335): 0
    libinput Tapping Enabled Default (336): 0
    libinput Tapping Drag Enabled (337): 1
    libinput Tapping Drag Enabled Default (338): 1
    libinput Tapping Drag Lock Enabled (339): 0
    libinput Tapping Drag Lock Enabled Default (340): 0
    libinput Tapping Button Mapping Enabled (341): 1, 0
    libinput Tapping Button Mapping Default (342): 1, 0
    libinput Natural Scrolling Enabled (343): 0
    libinput Natural Scrolling Enabled Default (344): 0
    libinput Disable While Typing Enabled (345): 1
    libinput Disable While Typing Enabled Default (346): 1
    libinput Scroll Methods Available (347): 1, 1, 0
    libinput Scroll Method Enabled (348): 1, 0, 0
    libinput Scroll Method Enabled Default (349): 1, 0, 0
    libinput Click Methods Available (350): 1, 1
    libinput Click Method Enabled (351): 1, 0
    libinput Click Method Enabled Default (352): 1, 0
    libinput Middle Emulation Enabled (353): 0
    libinput Middle Emulation Enabled Default (354): 0
    libinput Accel Speed (355): 0.000000
    libinput Accel Speed Default (356): 0.000000
    libinput Left Handed Enabled (357): 0
    libinput Left Handed Enabled Default (358): 0
    libinput Send Events Modes Available (320): 1, 1
    libinput Send Events Mode Enabled (321): 0, 0
    libinput Send Events Mode Enabled Default (322): 0, 0
    Device Node (323): "/dev/input/event8"
    Device Product ID (324): 1267, 12548
    libinput Drag Lock Buttons (359): <no items>
    libinput Horizontal Scroll Enabled (360): 1

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: unity-control-center 15.04.0+19.10.20190921-0ubuntu1
ProcVersionSignature: Ubuntu 5.3.0-29.31-generic 5.3.13
Uname: Linux 5.3.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu8.2
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Fri Feb 14 01:11:48 2020
EcryptfsInUse: Yes
InstallationDate: Installed on 2020-01-20 (25 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
SourcePackage: unity-control-center
UpgradeStatus: No upgrade log present (probably fresh install)