Originally reported in #716 (comment)

1. start a draft, enter some text
2. place the cursor on a word
3. tap the link button
4. in the URL field, insert something with a space in it, for example yahoo com instead of yahoo.com, and dismiss the links ui
5. observe 2 different words are inserted where the cursor was, yahoo and com
6. place the cursor on yahoo and tap the links button -> observe the links ui shows empty
7. place the cursor on com and tap the links button -> observe the yahoo com (invalid) address appears there.