Scroll lock bug in Visual Studio 2010

When I'm working in Visual Studio 2010, the IDE seems to switch to "Scroll Lock" mode at random times. Is this a new feature that I'm not aware of (initiated by some designated key/mouse-click) or a bug? I'm guessing this is actually a computer/hardware glitch on my system, but wanted to check if anyone else is experiencing this issue?

After I'm in this "mode", I can't seem to get out of it. I've tried physically turning ScrLk on/off multiple times, highlighting text, etc. I 'crazy-clicked' my way out of it once, but have no idea how. At that point, my only option is to close the IDE and restart, then everything is back to normal.

How do I turn off horizontal scrolling in Visual Studio?

Use Ctrl + E, then Ctrl + W for disable horizontal scrolling.

What is scroll lock keyboard?

The Scroll Lock key, which is a relic of the early IBM PC keyboard, is a key on your keyboard created to lock all scrolling methods. Scroll Lock was designed to alter the functionality of the arrow keys of the keyboard.

it thinks the control button is pressed, so just press control and it should fix