If I expand the blocks sidebar and drag one into a location where I would like it, then click "Finished Editing", when I browse away and come back to the page, the block is missing, it's not been saved.

It does this on every page, even the ones that already have blocks on them.

Do you see any errors in your browsers console? 

No, there's no failures on the console, plenty of successful calls to the backend though.

Edited November 22, 20213 yr by brfcs

Please upgrade to the latest release and try on an unmodified theme. If you continue to see an issue, please update the access details on file in the Client Area and we can take a closer look.