I currently have this setting set to 20000 for testing purposes. Upon attempting to upload a PNG above 20kb (it is 286KB), I will - as expected - receive this message.
However, upon attempting to upload a JPG of 321KB, it seems there are no restrictions, and the file is successfully uploaded.
I'm not sure why this is happening, so if someone could shed some light on this I'd be most appreciative. I can't remember ever seeing this error before, and attempting to search for this kind of thing yielded no results. Is there something I've forgotten to check or something?
Thanks in advance.