Related post here --->Drill Down Filters not working when published to tableau server
------not sure if you have the same case---
It looks to me like the URL is your problem. The ":sync_session..." part does not resemble any normal Tableau Server URL parameters (http://onlinehelp.tableau.com/current/online/en-us/help.htm#embed_list.htm).
How did you obtain the URL for your action filter link? The proper method is to use the "Share" link from inside Tableau Server. Copying the URL from the address of the browser can cause problems.