Why is there a forced open line on home page?

The why can't I fill the line between the bottom row of icons and the lower middle one with a row of icons?

See screenshot below:

Have you changed your display size recently? or ever? Try a reboot and they should fall in line. It happens to me when I change my display size from normal to small.

I think I had changed it to the middle setting (out of 5), which I calls Large.

I moved it back down one size and "voila" -- the line is now available for add'l icons.

Thanks again Blaze, but the negative to this move is that it also reduced the font size to smaller than I'd prefer...even though font size which I thought was for texts and emails and display size are two different settings options.

So, guess I have to make a choice.