Please describe the problem:
When editing text for widgets by using the "Label:" text widget on the General tab in the Properties frame, the cursor automatically jumps to the end of the text after any modification.  This happens after each insertion or deletion.

Steps to reproduce:
1. Start a project and begin a new window.
2. Add a checkbutton.
3. Modify the text of the checkbutton, starting in the middle of the existing text.


Actual results:
Trying to type normally results in the first character inserted where you expect and the rest incorrectly appended to the end.

Expected results:
The cursor should not automatically jump to the end.

Does this happen every time?
yes

Other information:
Glade 3.4.2 on Ubuntu 8.04 beta.
Pressing the "..." button and changing the text in the resulting dialog does not exhibit the same behavior.  It works properly.