Quite frequently when I'm editing a Page in Canvas and I try to upload an Image, I will select the drop down Folder (to place that image in a folder), but the menu is blank with no options:
And since the Upload button is greyed out, I cannot actually upload the image file. This seems to be hit or miss as other times it works just fine, but as of late it seems to be happening more often.
I'm specifically working in:
Firefox 55.0.3 (64 bit)