I have saved my recent mashup (many times), but instead of seeing the Edit button, I see the Cancel Edit button. Is this a known issue? Thanks.
This is simply how ThingWorx works. Upon initial creation, clicking Save will revert you back to View mode, but on subsequent edits on existing Mashups (and most other Entities as well) Save will commit the save, but you will still be in edit mode. You will need to "Cancel Edit" to go back to view mode. This will not cancel your previously saved changes.