Update not saved - Need to Publish before re-edit


When I update a block (text, image, or any other module), it remains ‘processing’ (see the picture - ‘Reorganization / Cost Control’ was edited, but still lighter and unable to edit again.
Moving a block keeps it rendering (see pic as well).

So after a couple of changes, i need to publish the changes, before I can edit anyblock i’ve touched before.

Is this a known bug, or a known incompatibility with another plugin?

Help much appreciated, as this slows down the editing a lot…