Created attachment 689937 [details]
Screenshot of GUI showing faulty dialog

Description of problem:
When using the "Follow TCP Stream" functionality, the Stream Content widget (the one that actually shows the data) starts with a very small size, that is not affected by the window resize. Attempts to resize the window merely leave a big unused space at the bottom of the dialog.

Version-Release number of selected component (if applicable):
wireshark-gnome-1.8.4-1.fc18.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Start any TCP capture with at least one stream
2. Right-click and select Follow TCP Stream
3.
  
Actual results:
Window displays with very small data widget and big space at bottom of dialog

Expected results:
Window should resize the data widget to make use of available space.

Additional info:
Regression - this did not happen on Fedora 16.