Run config separators gone after testing new UI and coming back to old UI

Might be an edge case here, but I have a bunch of different run configs (Cloud Code configs, Docker configs, Composer scripts, even compound configs) in the run config dropdown. Each type of configs used to be separated by separators:

But after activating the new UI and chaning back to the old UI, the separators are gone:

Is there a way to bring them back? I know it seems like a minor issue, but it's actually surprisingly annoying.