First, Thank You for adding the highlighting of the Row Number when you have cell(s) selected, makes it much easier to see what row you are on.

I am having an issue with selecting Rows, the grid used to allow the selecting of the entire row (with your mouse), by selecting the row number any moving the cursor up/down.  This now does not work properly, where sometimes it highlights a few rows, but does not keep the original row you started with.  For example if I start with row 9 and drag my cursor down to row 16, the only rows highlighted are 15 and 16.  If you drag quickly, sometimes it will select 3 or 4 rows.