Since yesterday my jobs are running with no log being displayed during the execution.
All I see in the log screen is "Set up job".
When job ends all the steps suddenly appears, with all the log.
Now I have a build with two workflows.
For first workflow, I experience bug too (Set up job eats all the logs):
But for second workflow, all seems to work fine (I see both all steps and logs):
I hope it helps to mitigate / fix the bug.
I think I'm seeing the same thing here - this job has apparently been running for 5hrs (!), but I can't expand "npm test" to see if there's any useful output there.