Example URL:
Try open any APNG with enabled traffic compression

Steps to reproduce the problem:
If you have Android, enable compression, and try open any APNG. Will no any animation. If you disable compression, will required hard reset of page, because these images caching. 

What is the expected behavior?

What went wrong?
Static APNG through compressor. 

Did this work before? N/A 

Chrome version: 59.0.3042.3  Channel: canary
OS Version: 10.0
Flash Version: Shockwave Flash 25.0 r0

WTF?