@frozendroid the two wired ones are from the last 5 years or so, both had a deffective middle button (multiple clicks when pressed). Temporarily fixed with a capacitor, but it didnt last long - and i had to ruin the sliding stickers to add it.
Now the new one has this scrolling backwards issue..
i guess i jsut use the middle button an awful lot more than is usual - because X clipboard and closing tabs and windows is just so EASY with a middle click