Thanks for including your files to help with this.
What you’re seeing is expected Shift + Enter is not recognized or needed as a way to setup single space line break. Mac and Win should both recognize “only Enter” for single line break. You can use “Line Spacing” control in Property Inspector if you’d like different spacing.
Is there something you’re specifically looking for that you’re unable to do by selecting “only Enter”?
Adobe XDMikolaj Dunikowski commented
just wanted to point out, that this error still persists and just made my cooperation with my developers a lot more complicated. Line breaks created on XD Windows are not being recognized on XD Mac and appear as one line.
This is a showstopper for performance and we came to XD exactly for that reason - performance.
Would be great to see this fixed soon.