Widget adding page contents to Custom Post Widget content

I don’t understand this and hoping someone can figure this for me.

I tried this with two plugins…

Firstly with Custom Post Widget and then with Content Block.

On this page it is adding the Content which is in a Template Builder from Themify. See the sidebar and the footer widgets.

https://ecadcollege.com/home/

Now navigate to the other page and it appears as I want it.

https://ecadcollege.com/product/solidworks-online-course/

Anyone any idea why the widget is behaving this way??

Thanks