Ok i've searched and checked and found no report on this but yet found several people with the same issue. When loading the game and going to click play or back, the buttons don't work - there's a small section that is clickable. It only happens after the 'live background' changes and can be cleared...

In fact, to add to this, why can't i set it like we do for filters on trains slots instead?
This solves my problem but allows the new method to remain?
If i add the item to my hotbar i want to be able to select it, even if i have something already in my hand.

you can alwasy clear cursor before picking up new items (Q key by default) Yeah i've just seen i can do this, but it's still seems completely un-intuitive to me as clicking to select something is a default type of behaviour, not replace this item in every slot 'even if something is already there'. ...

Oh no, this has ruined me, i keep setting the same item over and over in my hotbar now

Please consider making it a toggle setting so i can have it on! Please!

I am a heavy hotbar user, using the number keys is not convienient for me so i'd at least like the option to change it back to how it was!