Opening Florence virtual keyboard disables touchpad

Reported by user, reproduced by me on a Toshiba satellite running Tails 1.3

Steps to reproduce:

- Click on Florence Virtual Keyboard
- Click on any key

After pressing the first key, the touchpad stops working. Comes back to work if pressing twice the Fn+touchpad key. Keyboard eeps working all the time.

Feature Branch: bugfix/9011-fix-syndaemon-vs-florence

Related issues

Related to #7779 (closed)

Original created by @emmapeel on 9011 (Redmine)

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