flies straight…at a 45 degree angle, have no idea why.
Hi,
think it’s not an issue, you have to check your rudder controls.
there’s a few assignments (in yoke control or keyboard nummeric path) , when you use one of them and you didn’t notice it… then your rudder is activated to the left or right depending on what you hit.
I switched off or deleted them all … after I had it too 
, hope this helps
I have exactly the same issue, not 45 degree though but enough to be noticed. Have tried a few things but have not found a solution.