Web Editor will not save my code

I cannot get the Web editor to save my code.

I can press the save button - I get a 'code saved' alert display on the left side of the editor.

But when I load my sketch in another browser I can only see an old version of my code.

Currently the code does not compile - this may / may not be related

I don't know if this is a related problem or not, but I'm finding that when I currently try to download a sketch I've been working on in the web editor (Create) it only downloads an empty zip file to my pc
The only way I can get the sketch onto the pc is to copy and paste from each tab into the equivalent tabs in the sketch on the pc.