How can I reduce the amount of document storage used by notes app with zero notes
I noticed recently that my iPhone uses gigabytes of storage for documents for the notes app even though I have exactly zero notes on the phone. I know I have zero notes, because I used to keep everything in the cloud and recently had a problem with notes not updating reliably. As a trouble shooting step, I moved all the notes off the cloud and onto my laptop. Now iCloud shows exactly zero notes, and my phone shows zero notes. I then turned off notes synchronization to iCloud (on the phone), deleted the notes app, restarted the phone, re-installed the notes app, and ta-da it is using like 3.5 Gb of storage for documents and data. That's on the iPhone. On another iPad I have it's more like 20Mb of storage for zero notes. That seems like a lot of data to keep track of exactly nothing, but I'll live with it.
I have, of course, restarted the phone numerous times, removed and re-installed the notes app. And finally erased all phone data and set it up again from an iCloud backup. Currently the phone shows 3.79 GB of documents and data is being used for notes. (Did I mention that this is for exactly zero notes?)
Short of calling apple to have them tell me to re-do all of this is there any other trick anyone has used to remedy the situation?
iPhone 6s