My bank statements no longer display transaction details, only "paypal payment". They stopped displaying this informationa round the beginning of January 2012, before all transactions paid through paypal appeared on my bank statements with some indicator of what that payment was regarding.
Is this a change I have made in settings by accident, a paypal change, or related to my bank?
I haven't heard of any changes to be honest. It could be possible that your payments were being debited from a debit card linked to your PayPal account and then this could have changed to funding payments directly from your bank account recently.
I am unable to see your account so I can't advise what exactly this would be. If you wish, you can try contacting customer services directly and we can assist you further in order to determine why the information is now not appearing on your bank statement.