301 redirect but blank page

[etharion]

Url tracker v 3.15
Umbraco v7.12.1

We have a bunch of URL's that returns a 301 and blank page. At first we thought it should have returned a 404, since we couldnt find it in the Url tracker tab in Umbraco. After using the SQL query from method LoadUrlTrackerMatchesFromDatabase we found a result in the database. See attached.

Problem here is that the 'redirectnodeid' = 0, but theres a valid url on the 'redirecturl'
What I added to make our redirects work was: && result.RedirectNodeId > 0
to line 455 in UrlTrackerModule.cs.
Since the check only checks if 'redirectnodeid' has a value.

[etharion]

In addition to above, I found that line 265 need the '&& result.RedirectNodeId > 0' addition to the check too

EDIT:
I removed my extra check from line 265 again and updated the SQL query at line 256 instead. I added this part: (OldRegex IS NOT NULL AND OldRegex != '' )
Whole SQL query: "SELECT * FROM icUrlTracker WHERE Is404 = 0 AND ForceRedirect = @forceRedirect AND (RedirectRootNodeId = @redirectRootNodeId OR RedirectRootNodeId = -1) AND (OldRegex IS NOT NULL AND OldRegex != '' ) ORDER BY Inserted DESC"