I have this problem - unexpected frame-resizing behavior. It resizes proportionally by default and I can't change it so I can resize as needed. And no, rebooting is not the issue here.
This is a different question than the one posed on the thread you posted to, so I moved it to a new thread for you.
Let's start with the basics:
look into the frame fitting options when your document is open and nothing is selected.
Please post a screenshot also showing the Object Styles panel like I do here with my German InDesign:
( ACP )
To expand on others' questions and to clarify, how are you resizing the frame exactly, and what is it's content? Presumably an image?
In addition to all the other questions:
You can answer in one post. We will all see it.