Let's compare how are reported a pipeline job and a freestyle job when they are triggered as parametrized build in the build section.
In my example I have a freestyle job :
test-parametrizedPlugin-main-job that calls 2 jobs one freestyle and one pipeline :
In the status page of the job we see that the Subprojects part is OK but not the Downstream Projects part, the pipeline job is missing
And if we look in the status page of the run we see that the Subprojects part for the pipeline job is missing
Note that the 2 jobs were correctly started as we can see in the console log