Can you please provide more precise instructions on how to reproduce? Preferably in a step-by-step manner, like 1) Go to question x; 2) Click button y; 3) Expected z but saw v. Thank you very much.

Other user also said this is reproducable in the SaaS Version 5.3.4.

Also confirming this on 5.3.5+220314 . This is the public statistics interface.

reproduce as per: https://manual.limesurvey.org/Statistics#Public_statistics

When survey is submitted, a link is presented to user
View the statistics for this survey -> /index.php/statistics_user/197941?language=en

404: Not Found
Unable to resolve the request "statistics_user/action"

Could be nice if the link was also listed somewhere on the admin interface of the survey.

Controller changed from Statistics_userController to StatisticsUserController.
The runtime generates the url as "statistics_user/action/surveyid/123456".

That used to work before because to look for the controller class, a ucfirst() is done.

https://github.com/LimeSurvey/LimeSurvey/pull/2310

with patch from https://github.com/LimeSurvey/LimeSurvey/pull/2310
now it works on URLs:

/index.php/StatisticsUser/action/surveyid/197941 or
/index.php/statistics_user/197941

Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=33373

Fixed in Release 5.3.8+220404