Please describe the problem:
If a glade file is loaded containing a label whose text uses the 'markup' feature, the text is not correctly shown until the 'Use markup' button in the label's properties window is toggled off and on again.

Example:
A label whose text is this:
<span weight="bold" size="larger" color="red">Broken message</span>
will display as:
Broken Message
in normal size black text.

Steps to reproduce:
1. Load a glade file which has a marked-up label.
2. View the label - it will not be properly displayed, even though the 'Use markup' button is set to 'Yes' on startup.
3. Select the label, hit its 'Use markup' button twice (turn it off and on again). The text should now display as intended.


Actual results:


Expected results:


Does this happen every time?
Yes.

Other information: