Uploading module to update gives message: "The module was successfully downloaded" but does not update

[30knees]

What might be the problem when I upload via the backend an updated module and get the message "The module was successfully downloaded" but where the module does not in fact update?

[datakick]

https://github.com/thirtybees/thirtybees/issues/1759

Cache problems. 

Try updating to bleeding edge