Having a bit of trouble with keybindings and some keys in general

[Tarragon]

The 'grab wall' with the mouse button doesn't work for me at all, I have to jump at a wall to grab it no matter what. I remember this working just fine the previous time I played. (I uninstalled the game afterwards and deleted the data so I could replay the game with the story reset). I forgot if that's going to cause trouble later on in the game. The release wall with the right mouse button works just fine though.

The game also pretends to recognise my mouse side buttons, but then they don't do what I bound them to. So I have to bind those to a key in my mouse's app, then rebind to those keys in the game in order to use those mouse buttons. Not impossible, but a bit weird and convoluted. Why even have them available in the controls menu?

Then there's the rest key (Q), which I could rebind, but then it doesn't actually work in game, I still have to press Q. I tried several things to bind it to, and also just removed Q altogether, still have to use Q in game. Not the worst thing ever, but just wondering what is up.