Effect Stack Issue: Transform - Corner - Transform

I have an issue lately. I was started a 9:16 project.

First imported a 9:16 video clip & processed with some effects.

Then, I imported a 16:9 video clip. Started with Transform Effect to fill full of the canvas. Then tweak a little bit of Corner with Corner Effect.

Then again applied another Transform Effect to fill full the canvas again. But something was wrong during applying second Transform Effect - it READ the original ratio of 16:9 instead of the project ratio (ratio after transformed at first stage)! Weird right?

I then test the Effects Stack style in Shotcut. No issue at all!

I missed something? Or it’s a Bug? Or…