Ok, so I did 2 tests against the demo server and the bug is there, even more visible:
https://demoapp.trains.allegro.ai/projects/0e152d03acf94ae4bb1f3787e293a9f5/experiments/ced3d7a1c0e74296b3180a0b6c9711c4/info-output/metrics/plots?columns=type&columns=name&columns=status&columns=project.name&columns=user.name&columns=started&columns=last_update&columns=last_iteration&order=last_update I created an histogram with the xlabels parameter: the series names are set to "trace 0" and "trace 1" instead of "random histogram" and "random histogram2". In addition the bars are not shown at all (this did not happen on our server) https://demoapp.trains.allegro.ai/projects/0e152d03acf94ae4bb1f3787e293a9f5/experiments/98439af2fb9746369771784d92669562/info-output/metrics/plots?columns=type&columns=name&columns=status&columns=project.name&columns=user.name&columns=started&columns=last_update&columns=last_iteration&order=last_update I created the same histogram but without specifying xlabels: All is OK