Chrome Version       : Version 53.0.2785.143 (64-bit)
URLs (if applicable) : N/A
OS version               : 10.12 Sierra
Behavior in Safari 3.x/4.x (if applicable): N/A
Behavior in Firefox 3.x (if applicable): N/A
Behavior in Chrome for Windows: N/A

What steps will reproduce the problem?
(1) Click the green button at the top left of a Chrome window to make the window full screen.
(2) Press command+F to enter find mode
(3) Press escape

What is the expected result?

It should (and used to) exit find mode / hide the find bar towards the top right of the window.

What happens instead?

It exits full screen mode, and doesn't exit find mode.

This is so frustrating that I've disabled the escape button while using Chrome.