Frameless Window - Passenger Side Not Dropping

[Paveway]

Morning folks. Wonder if anyone else had this same issue.
I have a 67 plate R.
For a little while now the passenger window has been a little temperamental. Sometimes dropping as it should, sometimes not.
If it doesn't drop when my wife is about to get out and the engine is running, I have been able to use the drivers door switch; pressing up and down seems to free it.
It has also seen a little pressure on the door card that allows it to drop too.
Yesterday a new symptom with this saga; opening the door from the inside did nothing, but the outside did. This was repeated.
Car had not been used in a week, and I believe this is the original battery. But, it did do a 15 mile journey before we stopped and without any starting up problems, that could be associated with a battery issue. Despite which, this has been going on for some time.
I recall changing an actuator on my old TT as I was told that these were a common issue for VAG.
Any ideas would be appreciated.

Dave

[Paveway]

Just in case someone else has this issue.
I resolved it with a brand new battery. The problem went away instantly - never to show its ugly head. This was done back in July 2025.

[1.4_tsi]

Thanks for feeding back, my 66 plate still has its original battery, so worth being aware of potential issues