Hi,
You mentioned about "touching on the right-bottom corner", you mean click on 
that area or just touch it?
If you're taking about clicking, this means that your right key detection area 
might be too narrow.
In such case you can change it by adapting the "xinput set prop" command found 
in [1], but remember to change the touchpad name from "SynPS/2 Synaptics 
TouchPad" to what you're using (from your xinput output I guess it's the one 
with id=11, you can just put 11 here), and change the coordinate accordingly.

Clickpad has only one button beneath it, for right click to work, it's
combined with the click event and the detection with your finger on the
right key area. For the issue described in bug 1188025, that laptop has
two button under the clickpad, but the kernel think it's a clickpad with
only one button, making the right key not working at all.

[1]
https://wiki.archlinux.org/index.php/Touchpad_Synaptics#Buttonless_touchpads_.28aka_ClickPads.29

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https://bugs.launchpad.net/bugs/1372393

Title:
  [Acer Aspire E5-572G] touchpad not recognised

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