Unless I'm mistaken, I am only able to make full paragraph line breaks in the Rich Text Widget. I've tried Shift, Ctrl and Alt along with Enter (Ctrl and Alt don't create any line breaks). It would be super helpful to have the flexibility to include a <br> style line break in addition to a <p> style line break.
On a kind-of-funny note, I'm also unable to create single line breaks within the text field of this Enhancement Request. Tried the same combinations of key strokes, listed above.
Thanks!