I've just encountered a funny glitch in O365 in which I can't drag-and-drop files into a document library through its web part displayed on a web part page. Drag-and-drop works fine on the library itself, it only fails on the web part, and it's consistent across browsers and different versions of Windows/Office. I can't find any TechNet articles or questions about this situation occurring for O365, only for SP2013, and the solution doesn't help me in this case.
Has anyone else seen this behavior?
SyntaxErroron page load in
platform_embed.js, and nothing appears to be amiss when I actually try the drag-and-drop.