Transforming Rectangle without using Bounding Box

     When I create a rectangle I have the option to transform it by moving the edges around. Once I place the rectangle on an angle and hit enter I lose this option. A bounding box appears around the rectangle and I can't change the length of the rectangle without changing the size. I have spent over an hour an a half trying to figure out how to transform the rectangle by it's edges and not with the bounding box. I know that it is possible to transform a rectangle on an angle by it's edges and not with a bounding box because I have done it a million times before. I'm not sure what is going wrong right now. PLEASE HELP.

Thank you!

Below is the first image where I can transform the rectangle the way I want to and the second image is what happens after I hit enter. I really need to be able to transform the rectangle again in the way shown in the first picture, WITHOUT THE BOUNDING BOX.

I have tried:

-using free transform and regular transform

-rasterizing

-converting to smart object

-double-clicking rectangle

-free transforming path

-changing view options

-trimming

-rotating rectangle so it is not on an angle anymore

but nothing is working.