This is something I don't understand about paragraphs ("enter" key) while typing my text:
Sometimes, I keep typing directly under the previous line, like
this,
while in other times, the next line lefts a line space in between, like
this.
This space was artificial, with an empty line inside, because right now it works properly. However, sometimes you click on the empty line accrued and the blinkining typing sign just doesn't show up there, because there isn't any line.
Is it a bug? Or are there rules defining this?