PBI looks different???

Hi,

So I have one of my PBI files open, and everything looks normal, but when I try to create a new file the settings or something are different???

For example, in my current file, there are no marching ant-lines around the border, and the visuals have the little bar at the top... picture below showing what I mean

But now, when I start a new file, the bar is no longer there and the marching ant-lines are around the border and IDK if this is an update but I do NOT like it. Is there a way to go back??? If it was an update wouldnt it carry thorugh the original file like why are they different?

Sorry if this is a stupid question but this morning everything changed and I don't get why--it was fine yesterday.

Thanks!