I have a matrix job that runs on 2 nodes, each one runs the same set of tests and creates the report. The Allure report is shown just fine for each node build.
For the "main" build:
If both nodes were successful (or unstable), the report just stuck forever on "Loading"
If one of them has failed and no report was created, the "main" build report shows the successful node build report.
Both are confusing
I suggest to add an option to show merged report on the main build - probably should be the default option, alternative should be not to show Allure report on the main build at all