I had this problem with LTS 7.5.3, and then i see in the community that upgrading the Sonar version to 8.4, it would fix it. But, I still having the problem.
When I am in my own application (in “More” section), I click to submit a form to use a web service. Is a similar code of an official app, called CNESReport https://github.com/cnescatlab/sonar-cnes-report