Campaign editor breaks if Email is not selected

When Email is not selected as a delivery method on a step, the Content tab remains empty and the accordions on the Settings tab don’t work (bunch of console errors with setActiveAccordion is not defined). If I select the Email checkbox, then Content fields appear again. But if I then also select Whatsapp, the Content settings appear under the Settings tab instead. The results vary depending on what the original settings are and in what order you check/uncheck delivery methods from a step in a campaign.

Tried with several browser and managed to replicate with all.