Web Acceleration Not Caching Content

Hi,

I have 2 environments running F5s with as far as I can tell identical configurations.

Farm1 is running BIG-IP 11.5.1 Build 3.0.131 Hotfix HF3.

Farm2 is running BIG-IP 11.5.2 Build 0.0.141 Final.

Both configurations have identical web acceleration policy profiles that I would expect to do the same thing, however, caching does not appear to be working as expected on Farm2.

Farm1 F5 Response Headers(style.css)

Accept-Ranges:none
Age:10
Cache-Control:public, max-age=172800, s-maxage=14400
Connection:Keep-Alive
Content-Type:text/css
Date:Tue, 19 Jan 2016 20:15:18 GMT
ETag:W/"WAe0a9d0e2672ee330"
Expires:Thu, 01 Dec 1994 16:00:00 GMT
Last-Modified:Sat, 16 Jan 2016 01:06:10 GMT
Persistent-Auth:true
Set-Cookie:MRHSession=09d...; expires=Tue, 19 Jan 2016 20:30:18 GMT;path=/;secure
Set-Cookie:LastMRH_Session=09d...; expires=Tue, 19 Jan 2016 20:30:18 GMT;path=/;secure

Farm2 F5 Response Headers(style.css)

HTTP/1.1 200 OK
Cache-Control: public
Content-Type: text/css
Expires: Wed, 18 Jan 2017 20:21:35 GMT
Last-Modified: Wed, 13 Jan 2016 16:53:28 GMT
Persistent-Auth: true
Date: Tue, 19 Jan 2016 20:21:34 GMT
Content-Length: 3582
Set-Cookie: persistA=335937546.47873.0000; expires=Tue, 19-Jan-2016 22:21:35 GMT; path=/
Connection: Keep-Alive
Set-Cookie: MRHSession=b99...; expires=Tue, 19 Jan 2016 20:36:35 GMT;path=/;secure
Set-Cookie: LastMRH_Session=b99...; expires=Tue, 19 Jan 2016 20:36:35 GMT;path=/;secure

It seems like Farm2 F5 is not processing anything with web acceleration and the response headers behind the F5s are identical on both farms.

I've reviewed /var/log/wa/ logs and could not find anything that seemed suspicious.

Is there someway to tell why web acceleration would be bypassing content?

Thanks!