Sorry, for the breakage, but you need to add 'transform-box: fill-box' to the 'rotated' class to make this work. This also applies to Firefox and the latest version of Safari.

"Able to reproduce the issue on reported version 64.0.3278.0 using Mac 10.12.6, Ubuntu 14.04 and Windows 10.

Bisect Info:
================
Good build: 64.0.3263.0
Bad build:   64.0.3264.0

CHANGELOG URL:
You are probably looking for a change made after 515281 (known good), but no later than 515282 (first known bad).

https://chromium.googlesource.com/chromium/src/+log/daf11e8f4eeed2d409b857dca2c83f7613334e9a..e6fbde070b59cde157b26db7251e80436b14e5a3

suspect: https://chromium-review.googlesource.com/759040

Suspecting same from changelog.

@Fredrik Söderquist: Please confirm the issue and help in re-assigning if it is not related to your change.

Note: Adding label RBS as it seems to be a recent regression. Please feel free to remove the same if not appropriate.

Thanks!"

Working as intended per spec and other browsers.

Aha, before logging the bug I tried transform-box: fill-box and it didn't appear to work. But I now see that's a bug where the page isn't updated when I change that property (e.g. in DevTools) until I change some other property.

Thanks for the quick action.

 Issue 807588  has been merged into this issue.