Vertical scrolling

OK. I think I'm going crazy here but I went to grab my phone and hit the app drawer button and noticed that it was now showing up vertically with most used apps on the top instead of the normal horizontal. Was there a way to always change this that I never saw before. I didnt do anything different unless something got presses and changed while it was in my pocket.

I'm just looking for the option to go back and forth if there is one.

Thanks!

screen got vertical line

don't know why it happen.
i already send back to LG repair, anyone have same issue???? and what make this appear?

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the screen shows vertical lines

Hello,

For some time I have a screen problem when the phone heats up, the display shows vertical lines and I have my phone let stand until cool, but today I was travelled and my phone was exposed to the sun while I was using, and when it was heated, vertical lines appeared and when I touched the screen, nothing happened, I turned off the phone, remove the battery and put back and even now I can not use the phone, when I turn the screen I use, a few moments later, the screen colors change as if the screen had melted. I've got TWRP RECOVERY, when I go into the recovery, I can not touch options, I have to flash CWM to be able to handle with buttons volumes. What's the problem ?