What is happening:
When learning a new skill from the book, if there are empty spaces at the start of the skillbar, more than one copy of the skill will be acquired.
The duplicated icons can be used to activate the skill.
Changing map or relogging fixes the issue.

Game client version:
0.1.4

Reproduced by:
Blue Charm

Reproduced on:
windows10 64bit

Screenshots: