I'm using the latest Beta of L7 and there is a problem with highlighting using the keyboard. To replicate create a line of text followed by a quote, as shown below:

Place the cursor at the beginning of the word In, now try to highlight both the text line and quotation by holding down shift and pressing the down arrow. This words fine for lines of text but as soon as a quote is involved the highlighting fails.
Suspect it is a bug.
Paul