v201 b2217 on OSX

To reproduce:
type “abc abc bcd blah lbah”
Select the line
then choose ‘selection > split into lines’

Actual behaviour:
Nothing happens.

Intended behaviour:
the text should have been split into lines

I stand corrected, this is working properly. Apologies

If you want to have each word on a separate line, select the first space, then press cmd+d until all the spaces are selected and then press enter.