I have been using the timeline module to plan our team’s roadmap on a high level fashion, and I realized you can drag the tasks outside the timeline module, thus creating a card element. This is extremely useful as we can now move items from the roadmap view directly into planning boards (ie., Sprint board). However, the drag & drop functionalities don’t seem to work with these cards derived from tasks in the timeline module.
For example, if I drag my name over one of these cards, it does not get assigned to the task, instead a name element just floats on top of the card. The same happens for estimations (Story points / T-shirt sizes).

Is there a way to enable the same basic drag & drop functionalities for these cards, or is this a known limitation?