Scan Document badly Auto cropping - S20

[Debsd]

have a samsung s20, which I've been using to scan lots of documents, up until recently this worked perfectly, I could change the corners and it would fix the perspective etc, it was great.

Until the last few days, I scan a document, set the corners and save, but the document that is saved is not the parts I selected, its like my phone just decided I didn't know what I want and that it knew better and decided itself what the corners should be, sometimes ending up in me only having 1/3 of the document I want.

I've restarted my phone, reset the camera defaults, deleted the camera cache - how do I convince my phone that I know where the corners are on the document better than it does?

[Richmar83]

I use Microsoft Lens as I find it to be more effective and produce documents in multiple formats.

[Cyclebunny]

My Samsung Galaxy S10+ no longer automatically scans a document when I use the camera. Is this due to updates or can I amend the settings somewhere?

[BandOfBrothers]

@Cyclebunny 

Launch the Camera app.

Tap on the settings cog in the top Lh corner.

Tap on Scene Optomiser.

If the documents option is available then there will be a toggle saying Scan Documents.