Steps to reproduce:

1. Choose a Graph in Monitoring > Graphs
2. Click on the new time period
3. Click in one, for example, last 6 hours
4. Now click on another, this month

Result:

It works when selecting the first of the time intervals but any other after that it will not work or update. After a page reload I can choose another, but it only works for the first selected.

Expected:
To work for every of the time intervals everytime.

Also, I get some JS errors:

jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1&files[]=class.calendar.js&files[]=gtlc.js&files[]=flickerfreescreen.js&files[]=layout.mode.js&files[]=servercheck.js:1662 Uncaught TypeError: Cannot read property 'id' of undefined
at Object.refreshAll (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1&files[]=class.calendar.js&files[]=gtlc.js&files[]=flickerfreescreen.js&files[]=layout.mode.js&files[]=servercheck.js:1662)
at Object.<anonymous> (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1&files[]=class.calendar.js&files[]=gtlc.js&files[]=flickerfreescreen.js&files[]=layout.mode.js&files[]=servercheck.js:1196)
at Object.dispatch (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1:12133)
at Object.elemData.handle (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1:11804)
at Object.trigger (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1:12045)
at Object.<anonymous> (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1:12729)
at Function.each (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1:7695)
at init.each (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1:7304)
at init.trigger (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1:12728)
at Function.$.publish (jsLoader.php?ver=4.0.1&lang=pt_BR&showGuiMessaging=1&files[]=class.calendar.js&files[]=gtlc.js&files[]=flickerfreescreen.js&files[]=layout.mode.js&files[]=servercheck.js:767)