Robin
I may be the guilty party in removing additional punctuation
Don’t worry, it can’t have been you, since this is in the original English strings already, caused by transifex, highlighting (actually invisible) line breaks in an unexpected way for html, which heads people to the false impression that these are <br> tags, which is what would represent a line break in html. Our task is now, to fix this in the en_GB and en_US translations. You can look into en_GB for what I already have fixed, and carry over/improve further in en_US. In this set of resources it is a good idea not to copy all strings first, since most of them don’t need a fix, and it is way easier to see the actual fixes to be applied, when not all the other strings without any changes are present in the translations as well.
Windows is like a submarine. Open a window and serious problems will start.