I have a customer situation.
While browsing with UCBrowser in Mobilephone - Unable to block unwanted sites.
There is Appl/URL rule to block few unwanted sites and also UCBrowser app as well.
But we can see the site is getting accessed with UCB (In chrome - it is fine blocking unwanted sites)
Per Tracker it shows blocked, but able to access those sites.
I replicated the above setup in my lab with Android app in VMWare.
No luck - unable to block UCB or sites in UCB