Video export result is shrinked on the top screen

Hi, all,

I was trying to export my video in Premier 2021, nothing went wrong and no error appeared. 

When I played the clip, it played normally like this ↓.

But whenever I pause playing the video, or rendered it, it shows like this↓:

My video got shrink on the top. This view also shows in the render preview.

I had tried different sizes rendering the video, like H.246 in different sizes, most of the sizes showed like the shrinked one, it only worked in 480 SD. HOWEVER! The preview on the 480 SD was still rendered in a shrinked view like the picture abbove.

I had tried restart my PC, and reinstall Premier Pro, but none of them worked.

Please help... 😞

Thanks....