I'm running in an issue on
Magento EE 2.2.3 with
category thumbnail images. Normal
category images seem to upload just fine, and (as shown in the two pictures below, first shows it lets me upload the image, second is after save), I can initiate the thumbnail upload, but on submit, but after refreshing the page its simply gone. There are no errors and nothing useful in the log that I have found, and no notifications in the interface.
I found a similar issue here Magento2 Category thumbnail image not uploaded? but from what I can tell the fix there is already part of the more recent version that I have (I might be wrong on that, not entirely sure).
Is there anything I can do to debug this effectively? I would like to have
category thumbnails in use in the menu system but can't with this not working.