Save problems

If you spend too long editing a file then try to save, it won’t save. It just hangs.
To avoid losing all your hard work, there is a workaround.
CTRL-A to select all content in the editing window,
CTRL-C to copy to paste buffer.
Reload the page (this will lose your edits so be sure you did the copy).
The editor will reset with no open file, so open the file you were editing.
CTRL-A to select the entire contents.
CTRL-V to paste in the edited contents, overwriting the file.
Do a save and your edits are back.