I use the ability in the POS App to manually enter some text at the bottom of our receipts e.g. returns time period and how to follow us on facebook. Periodically this information seems to disappear from the receipt and when I check the App, the fields are blank. I believe (am guessing) what is happening is that whenever Shopify update the App it wipes the content from my fields?
Yep I've seen the same thing with our customers logo image on our receipts. I don't think it's quite as often as every app update but it does happen periodically and without notice. I know I mentioned it to support a while ago. Probably a year ago but not much happens to improve POS functionality. Many promises. Little action.