Track view acting crazy

Normally, I do a 'shift f' to get all my tracks to fit in monitor view. All the tracks are the same size, height and width. Don't know what I've done but now when I do a 'shift f' one of the tracks doesn't resize but adjusts itself to another size (much bigger than the other tracks).
 
Also, I had a few tracks that used automation. I deleted them but now when I click the 'N' to open the automation lane, one of the tracks has nothing there, the yellow line is gone. The rest of the tracks has the yellow line when I click the 'N'.
 
Also, I used to be able to resize only one track at a time (height wise). Now when I try to resize a track (height wise) all of the tracks are resized.
 
Is there a way to revert to the previous way I was doing things? Revert to default settings without messing up my volume, panning, etc.? Thanks for any help on this. 

noynekker, thanks a lot. That was it. Thought I had probably hit a key combination and even tried shift-Z, I thought, but it worked this time.
 
One more question. My piano roll, when I opened it before, was at the bottom. Now when I open it, it's at the top. Know how to get it back to the bottom. Thanks. 

Also, I had a few tracks that used automation. I deleted them but now when I click the 'N' to open the automation lane, one of the tracks has nothing there, the yellow line is gone. The rest of the tracks has the yellow line when I click the 'N'.

 
Clicking 'N' is used to turn Snap to Grid on/off, not open automation lanes