Setting image captions in MultiMarkdown

No matter what I do, I cannot set image captions in MMD export. Compiler always generates empty caption, such as:

![][StaticArraysCopy]

If this a “feature” of the MMD generator or a bug in Windows version?

It looks like they have implemented none of the methods used to define a caption to an image, using the GUI anyway. One can of course type in the syntax themselves, using the trick to link to an image in the binder (while the documentation in the beta is old, the method hasn’t changed, and is described in the last paragraph of §21.4.1, Images).