Sonar coverage on PR issue

SonarQube ID information
Server ID: 4E0B12C0-AWx3FFVJ-rodZ4C38Nhp
Version: 8.4.2.36762
Date: 2021-02-03

Hello, as per my previous bug, I was told that PR with less then 20 lines of code will not fail the QG, but main branch will fail:

As you can see from the following example, this doesn’t seem to be consistent:
(6 not covered lines of code causing a failure in the merge request)

Regards,
Francisc