1. Create a new Qt Quick Application project.
2. Open its QML file in Design mode.
3. Select the Text item.
4. In the Properties view, change the value in the edit control for the "Text Color" to "#100000" and press Enter.
5. Switch to Edit mode.
   You'll see that the value was set there.
6. Switch to Design mode.
7. In the Properties view, change the value in the edit control for the "Text Color" again, but don't press Enter. Just set focus to a different control, e.g. the style color.
   The Text color keeps showing the new value. Previews don't change.
8. Switch to Edit mode.
   The value was not changed.
9. Switch to Design mode.
   The Text color keeps showing the new value. Previews still don't change.

The Designer should always show the same values as set in the QML file. Previews should respect these values.