Pressing enter to confirm a function description instead enters a new line

Using Enter to accept the description of a blueprint function causes the cursor to return to a new line instead of accepting the current input.

Regression:
Yes - Pressing enter in 4.12 would accept input as expected

Working CL: 3039270
Broken CL: 3106830

1. Open UE4 Editor
2. Create a blueprint based on Actor
3. Add a function
4. In the Details tab, enter something into the Description field and press enter

Result:
Cursor returns to a new line

Expected:
Pressing enter accepts the current input