Is there a way how to break lines in Sketch? Like you can in PS, AI and InD?
Sorry, not sure I understand by "break lines". What is it you're trying to do? Can you provide an example?
This may help http://www.w3schools.com/cssref/css3_pr_word-break.asp in PS and AI it's a in paragraph setting as break line value.
Layer / Paths / Scissors.
Had the same problem few days ago but I didn't found how to do it. Would be great if someone shed any light on this.
I've contacted support a few weeks ago and it's not supported.