Defining rubric points with a comma as decimal separator discard the decimal part

We are using comma as decimal separator and Moodle discard the decimal part when saving the Rubric.

1. Create an assignment with Rubric as Grading Method
2. Define a new rubric
   1. In the 1st criteria, add levels...
      • Level 1 = 0 pts
      • Level 2 = 0,5 pts (put a comma there)
      • Level 3 = 1 pts
3. Save the rubric
4. In the result view, Level 2 is set to "0 points" instead of "0,5"