Can you post a screenshot?
There's nothing to see. If you can just imagine a text box and photo that won't shrink in size.
One possible scenario:
Draw a circle 8 mm in diameter. Apply Stroke 10 pt. Try to resize to 6 mm (enter value in W or H field). You'll get this pretty straightforward alert:
I guess, you encountered something like this. Something, that can't shrink to values you ask. Not sure if it must be stroke, exactly.
actually you can scale objects to a smaller size.
It depends of the preferences with scaling you are using.
And you have to use the scaling percentage edit fields:
1. That does not work:
2. That will work: Use the scaling percentages input field(s)
Make sure that in the preferences
When Scaling: "Adjust Scaling Percentage"