Created attachment 160599 [details]
1.png

This was reported downstream to:
http://bugs.gentoo.org/show_bug.cgi?id=318623

and reproduced here. You can see attached screenshot to view current situation. For testing this problem, you need to have "Due date" column added and, then:
1. Click on "Click to add a task" line, adding a task called "test0"
2. Click on "Due date" box for that task to set due date and time -> The task now changes to the normal color of your task list (not the same *blue* used when adding task using the second method explained below)
3. Wait until the time of the task is gone. -> The task don't change the color
to red as it should.

Now, try to add a second task using "New" button:
1. Click on "New" -> You get a new dialog window.
2. Give a name to the task ("test1"), an end date and time. Click save. -> The
new task test1 is shown in the list in *blue*.
3. Wait until the time of test1 is gone -> The task changes the color to red as
it should.

I am using evolution-2.28.3.1

Thanks