Problem with category points results

Hello community,
I allow myself to contact you because I have for some time (since the last update 7.3.2) problems concerning my questionnaires.
To put it simply, I have several questionnaires but two of which are problematic for me. (same principle for both)
Normally, the person completes the questionnaire and once validated at the end, I receive the results by email.
This email is composed as follows:

Mr or Mrs X obtained a total score of XX / 120
Category 1: XX / 40
Category 2: XX / 40
Category 3: XX / 40

As you can see, the questionnaire is therefore divided into 3 categories. The total score is always good as well as the individual scores for categories 1 & 2. On the other hand, for category 3, it will always show me “1/40”. And the problem is that in the total of the 3 scores, if in category 3 the person had 15 correct answers, they will be well counted …
Example :

Mr or Mrs X obtained a total score of 48/120
Category 1: 20/40
Category 2: 20/40
Category 3: 1/40

I saw that there had been other topics regarding category issues but that didn’t help …
For information, I do not use any QSM Addon and I have not added or modified my site since these problems … (apart from updating the plugin)
I thank you in advance !
Regards