I can't reproduce the bug.

Thank you for the feedback. I'll tried various server with plain limesurvey installations with the same output.

1) Please visit: https://testtesttt.limequery.com/377191?lang=en
2) Answer Question 1 "FivePointChoice1 - Mandator" with 5 stars
3) Submit the survey
4) Note "One or more mandatory questions have not been answered. You cannot proceed until these have been completed." occurs
5) Indication of question 1 (5 stars) is gone

can you confirm you're running the latest version? what build are you using?

The sample survey (https://testtesttt.limequery.com/377191?lang=en) is running on Version 3.14.2. However, I can't see the build because this is only available on "LimeSurvey Professional" (???)

I did a installation on a test environment (LimeSurvey version 3.13.2; LimeSurvey build 180709) and I'm able to reproduce the behaviour.

I updated the installation in the test environment to LimeSurvey version 3.14.2 / LimeSurvey build 180807.
Still the same behaviour.

Any updates on the issue?

It work on «The sample survey (https://testtesttt.limequery.com/377191?lang=en) »

You're right - my mistake. It just does not work with a private window in firefox

Oups, no … you're right.

Screenshot after https://bugs.limesurvey.org/view.php?id=13890#c48669 are really clear …
It's OK if you set 4 starts, not OK with 5 :)

Ca reproduce on FF without private mode :)

Strangely : only for mandatory 5 stars

You're right! Can't remember my own bug report :)
Any chance this bug gets fixed soon?

Please update to the latest version and check if the bug can still be reproduced. Thank you.

Can't reproduce the bug. Seems to be fixed. Thank you.