History not properly sorted in Product-Growl

What steps will reproduce the problem?
1. Open Growl, go to the History pref pane and click on the "Time" column so as 
to have the most recent notification first.
=> everything is correct

2. Close the preference pane.
(but you can also keep it opened with the same final buggy result)

3. Raise some new notifications (with HardwareGrowler or GrowlTunes for 
instance)

4. Reopen the Growl preference pane 
(or click on the new notifications displayed in the menu item)
=> it reopens directly the History preference pane as it was the last closed.
=> the Time column is correctly activated (displayed in blue)
Nevertheless, the order is quite weird (I can't say which order is displayed 
;-))
and the new notifications of point #3 above are not displayed first.
The user must click twice on the Date column (reverse order and revert order)
so as to get the proper order again...

Weird... 

What is the expected output?
All the notifications, including new ones, with most recent first.

What do you see instead?
A different order, not relevant, in spite of "Time" column being still selected 
in blue as the ordering criterion.

What version of the product are you using? On what operating system?
Product-Growl

Please provide any additional information below.

Original issue reported on code.google.com by yann.ric...@gmail.com on 23 Jun 2013 at 9:10

Merged into: #526

jraebrown / growl

History not properly sorted in Product-Growl #597