I’ve made sure mask is checked, even though I have not masked anything in my clip, and yes I am dealing with the same clip. I have got Vegas Pro 14 64 bit installed. What did you mean by Second CC? Sorry kinda new to editing.
Seems to me that you are using an effect which has your video “x” and “y” values to reflect… Could you have possibly made an error using this effect which affects your entire clip?