Esc key cancels "Edit Details" when "Wiki Markup Tips" is open

1. Create a review
2. Go to "Edit Details"
3. Put some text into "Objectives" text field
4. Click on "Help for Wiki syntax", a new "Wiki Markup Tips" window will pop up
5. Press "Esc" key to hide that "Wiki Markup Tips"

Expected:
Only the "Wiki Markup Tips" dialog is canceled, "Edit Details" dialog stays.

Actual:
Both the "Wiki Markup Tips" and "Edit Details" dialogs are canceled. The text entered in objectives field in step 3 is gone.

Similar experience is when you do steps 1 to 3 and press "Esc" key. The "Edit Details" dialog is gone. In case there's some text already entered maybe it should ask for cancel confirmation.