Flash shrinkage in Chrome

Someone saw something weird. On her computer, by going thru a few simple steps in a Flex app, she was able to make some pages look normal whereas others were shrunk teeny tiny.
I wasn't able to reproduce it on my machine.
Same OS.
Same version of Chrome.
Same Flash Player setup.

DIGRESSION
Chrome's use of Flash is special.
If you go to chrome://plugins, you see the two or more versions of Flash that Chrome uses- a Chrome version and your system's version (as well as maybe another- not important to the story).

I tried toggling between using one, then the other, then both.
No difference- everytime unreproducible on my machine; everytime reproducible on hers.
END DIGRESSION

I'd tried everything I could think of.
Then someone else suggested looking at the zoom setting in Chrome.
That was it.

I couldn't find this stupidly easy solution when doing a search for this problem online.
Hopefully this post will prevent others from having this problem.