A WebmasterWorld has several Google AdSense publishers complaining the the AdSense console has shrunk!
Specifically, the font sizes within the AdSense interface, where Google AdSense publishers maintain their ads, view reports and make tweaks to the ads and targeting, has all shrunk.
One publisher said:
For the past 2 days, the fonts on the AdSense Interface have been ridiculously small. At first, I thought I somehow mucked up my browser settings, but it's the same on other computers I use.Is the AdSense Team trying to push people to the new interface by slowly shrinking the fonts to minuscule size?
I personally cannot replicate it on my browser, but it seems to be affecting some users. So if things look really small, don't blame your eye sight - it is likely a bug.
Forum discussion at WebmasterWorld.