Stop getting folder size when deleting several folders

[NotDifficult]

When selecting several folder to delete them, the folder size is calculated.
When pressing DEL before all folder size where calculated, deletion starts but the refresh symbol (for calculating size) stays. Is this just a GUI problem or does TC really continue getting folder size when starting deleting a folder?

Image: http://snag.gy/DMydt.jpg

[ghisler(Author)]

This calculation is done in a background thread, so it continues when you do something else. I recommend that you abort it with ESC before starting any other operations.