Hi,
It’s possible that your scanner update is the culprit here. What version are you using?
SonarScanner for .NET has seen some rapid iteration over the last few months. First, in 8.0, we started picking up languages that had previously been ignored. Then we realized we might have gone too far and toned that down in 8.0.2, including ignoring coverage files. BTW, the current version is 9.0.2.
HTH,
Ann