so you mean it it working fine for below steps
Install the App on a device which does not have any URL Filter installed.
Open browser try loading any blocked URL it gets blocked.
Delete the existing URL Filter App and install the new one with updated bloom filter and do not kill previous browser instance.
Now try to load the new urls in the already opened browser which are added newly in the current URL Filter app.
The new urls will not block for already opened browser neither urls which are removed from new URL Filter app will get loaded for the same instance of browser.
As soon as you relaunch the browser then everything works fine.