Steps to reproduce the issue

I upgraded my joomla installation to 3.4.5 from 3.4.1. Now, when the site is accessed via a url in an email (such as a Kunena post) and where the user is not currently logged in, the login redirects to the users profile page and not to the return url.

I have tracked the problem down to a change made to com_user around line 44 where the return is tested with JUri::isInternal. Somehow the return url is missing the slash after the sitename.

The URL used to access the site is:http://192.168.0.219/index.php?option=com_kunena&view=topic&catid=18&id=565&Itemid=302#885

When the login form is presented the Base64 decoded return value in the login form is: http://192.168.0.219?option=com_kunena&view=topic&catid=18&id=565&Itemid=302

When com_user makes the call to JUri::isInternal it sends this Base64 decoded value. Inside isInternal the function calculates the base of the url to be http://192.168.0.219 but the static::base() function call returns http://192.168.0.219/ with the slash at the end so the comparison fails so the return is discarded.

The 3.4.2 update to com_user is where this change was inserted.

I can comment out the test and it works for now but there is something wrong. I hope this is the correct place to post this issue.

Thanks.

Expected result

Actual result

System information (as much as possible)

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