Is it a malfuntioning of the if conditional in set question?

I would appreciate it very much if you could check whether the conditional coding ‘If’ is not working properly as it should.
If so and I am not wrong, there is a serious bug that should be repaired

When I run the ‘Example of If’ included on ‘set section’ in the documentation 3.1.1, I cannot get the score that I expected
Whatever answer I give to the 1st radio question ‘How much do you like bread?’, the score obtained in the conditional coding in the set item ‘likes_bread_very_much’ is always 0.

Even If I change the scores of the conditional in the set item ‘likes_bread_very_much’ (from 0 to 1 and from 1 to 2), once I answer the first question, the score obtained from the conditional of the 2n question is always 1

To be clearer, below, I reproduce the code of the mentioned example included in the documentation, adding an extra final info question to output the results

l: my_first_question
t: radio
q: How much do you like bread?
- Not at all
- A little bit
- I like it
- I like it very much
- There is nothing I like more

l: likes_bread_very_much
t: set
- if $my_first_question < 4 then 0
- if $my_first_question >= 4 then 1

l: feedback
t: info
* my_first_question: {$my_first_question}
* likes_bread_very_much: {$likes_bread_very_much}


I will be waiting for your comments or corrections
Thanks