Font size problem when switching between Windows 7 and Windows 8

Hi everyone, 

I am struggling with a strange problem.

I have a module which has been edited on Windows 7. When I open it on Windows 8, the size of the text has increased randomly in multiple places.

This is how it should look like.

After opening the project on Windows 8, this is how the same page looks like 

Another example:

And published on Windows 8

I wanted to check with another project and I am getting the same problem with another module i've created on Windows 7 and it looks different on Windows 8.

Did anyone run into that problem as well? Is it normal? Is there a workaround?

Thanks for your help!