I wanted to tweak my custom CSS, but it doesn't save the changes....

clicking the "Save Custom CSS" button just refreshes the page and reloads the previous CSS there, without any of the edits.

I had tried deleting my custom CSS and starting again a few days ago, but again, clicking the save button just refreshes the page, and all the previous coding is still there!

Yesterday (Friday) I was able to change the font size in my existing custom CSS (as I'm trying to make the legacy news page more suited to my eyes), but today when I add in a new line of coding it just refuses to save :(

[edit] And now it finally shows me the amended coding, once I've refreshed a few more times!

So it does save the coding changes, but the visible coding on the screen does not update correctly when you click save (which makes you think nothing has changed), and there is a time delay on the new custom CSS effects (like a font colour change for instance) actually showing up!