Pup error dialog box cannot be resized

Description of problem:
If pup yum-backend fails due to any reason (download failure / etc), an "Error
downloading packages" dialog box is displayed, with a small "Details" expander.
Once the detail expander is selected, a rather small text control is opened,
showing a detailed error description.
If I resize/maximize the "Error downloading packages" dialog box, the dialog box
itself is resized, but the "Details" control isn't resized with it.

Version-Release number of selected component (if applicable):
Pirut 0.9.10-1

How reproducible:
Always

Steps to Reproduce:
1. Disconnect the network.
2. Start package updater.
3. Wait for network error.
4. Resize the "Error downloading packages" dialog box.
  
Actual results:
Details text control does not get resized with the parent dialog box.

Expected results:
... Details text control should get resized with parent dialog box.

Additional info:
-