APM sso with storefront 3.14

I use v13.0.0 build 3.0.1679 and i want to configure SSO from portal APM to storefront 3.14. It works witch storefront 2.6 but with 3.14 storefront the first connection never success. I follow https://www.f5.com/pdf/deployment-guides/citrix-vdi-iapp-dg.pdf for manual config.

 

The first time i launch my portal access it's never works and storefront end with login timeout. If befor timeout i close my tab and open again my portal, then SSO works. Same thing if before timeout i refresh my tab then sso works.

 

But never the first time ?