pfSense

I'm using 2.3.4-RELEASE (i386) and when I open the Staus->Monitoring page, I get a JavaScript error (below). It appears that on line 1087 of status_monitoring.php, when determining the timeFormat, the step property of the first data element is used. In my case it is 1800, which is not in the timeLookup dictionary. By adding an entry for "1800" to the timeLookup dictionary on line 490, I can get the page to render correctly.

TypeError: n is undefined
t()d3.min.js:1
draw_graph/Co.text/<()d3.min.js:3
Co.each/<()d3.min.js:3
Y()d3.min.js:1
Co.each()d3.min.js:3
Co.text()d3.min.js:3
n/<()d3.min.js:5
Yl.each/<()d3.min.js:5
Y()d3.min.js:1
Yl.each()d3.min.js:5
n()d3.min.js:5
Co.call()d3.min.js:3
chart/<()nv.d3.js:1628
Yl.each/<()d3.min.js:5
Y()d3.min.js:1
Yl.each()d3.min.js:5
chart()nv.d3.js:1612
Co.call()d3.min.js:3
chart/<()nv.d3.js:9571
Yl.each/<()d3.min.js:5
Y()d3.min.js:1
Yl.each()d3.min.js:5
chart()nv.d3.js:9379
Co.call()d3.min.js:3
draw_graph/render/renderLoop()nv.d3.js:99
1d3.min.js:1:14696