Totals exceed my credit limit

Description

I have just noticed that when I add my current balance to my available balance the two add up to more than my credit limit, has anyone else had this?
I have recently been accepted for the payment holiday and wondered if that might have something to do with it, but its later here in the UK and the help messenger said « a few hours » for someone to respond so I will probably be asleep long before then so I thought I would ask the community in the meantime in case somebody has already asked about the same thing and has been given an explanation
Basically if I add my current balance to my available balance its around £60 more than my credit limit rather than the two adding up to EXACTLY my credit limit as it normally does
Cheers