Apparently, a kerning malfunction in the previous design meant that the bottom of the ‘l’ and the bottom of the ‘e’ didn’t quite line up.
To fix it, Google moved the “g” one pixel to the right and the “l” one pixel down and to the right, as spotted by the denizens of this Reddit thread, wherein it is also pointed out that you can check all previous iterations by changing the number at the end of this url.
KernType is a game where you compare your kerning skills to those of professional designers.
You may think you’re instinctively pretty good at kerning. You’re not. Unless you are. In which case we apologise unreservedly for doubting your epic kerning skills. You big kerning legend, you.