Pressing escape when accessing the Minecraft configuration returns to the title screen

[haykam821]

This issue can be reproduced with 5e3e926ec2a8f3f542326615b486251bdbec25ac by taking the following steps:

1. Click the 'Mods' button.
2. Select Minecraft from the list of mods.
3. Click the 'Configure...' button.
4. Press escape.
5. Observe that the title screen is now shown, as opposed to the mod menu when the 'Done' button is clicked.