Markdown body part inside flow part - disappearing content on editing item

[Cinnam00n]

issue

I created a content item which contains a flow part, which in turn contains a type with a markdown body part in it. After the item's creation, when going back to the item to edit it, the content of the markdown body part disappears, i.e., the WYSWIG editor does not contain any text that was input there at items creation. The text comes back after clicking in the WISWYG editor's window.

Expected behaviour

The text is visible on editing the item right from the start.