Repeat selection in note entry mode

Is there any way to repeat ® the selected notes in note entry mode? I can only get it to repeat the last note. Outside of note entry mode, it works as expected.

No, when the caret is visible, R only repeats the single item to the left of the caret (regardless of whether it’s actually selected). Outside of step-time input, R basically acts as a special kind of copy and paste operation.