Refreshes media every time i charge it

Both my Clip Zip and Clip+ have ‘suddenly’ started exhibiting this behaviour. Both have latest firmware updates, so I’d also like to know why and what (if any) remedies there are?

It’s so annoying as ‘refreshing’ isn’t exactly quick with 32GB+ loaded and wastes about 12% of the charge each time. I usually now only charge via mains usb adapter.