I have just added the latest SPPB update, and an old issue has reappeared when editing and saving the frontend.

The page opens correctly initially, but once edited and saved all in-context editing and content has been removed. Only Helix Template header and footer remains viewable.

Page content remains in Backend view.

This issue was around in earlier version, and was resolved. But now apepars to be back.

I am using Firefox, but this has not been an issue for a long time - I hope you will resolve. Thsi sis a major problem for clients editing their own sites.