We have recently upgraded our jQuery version, as well as downloaded the latest version of Kendo UI.
Since then, the following code, which worked previously, doesn't do anything:
Either this is a known bug for everyone who recently upgraded jQuery, or, I suspect it is more likely because we are using a *customized* minified jQuery file, rather than the jquery.min.js included in the Kendo download. 

So, my question is: specifically, what dependencies of jQuery are required for the splitter tool. Also, are there any jquery.ui.js dependencies for the splitter? Aka, what jQuery libraries is the Splitter built upon? I couldn't find this type of documentation in the product specs. I would like to make sure our custom minified file includes all that is completely needed.

Thanks for your help!
Sarah

I believe I have found the issue. Perhaps something changed with the latest Kendo?

Here was my previous instantiation logic:
I want to keep the user from manually collapsing the Splitter herself, which is why I originally set it up this way (notice the center pane has collapsible: false). The use case is after a certain click action, an "extended options" pane is revealed to the user. I only want that pane expanded in the case she clicks the link to expand it.

Now, it seems I must set collapsible: true in order for the collapse event to trigger. Can you confirm this has changed?

Is there a work around for this? I'm hoping for some way I can continue to prohibit my user from collapsing yet still be able to manually collapse in the background via other js events.

Hello Sarah,

The logic for the collapsible behavior you described has not changed from Q3 2012. Anyway I am afraid that there is not work-around to this - this is the expected behavior if the pane is not collapsible you cannot programatically collapse it.

I am sorry for any inconvenience caused.

Kind Regards,
Petur Subev
Telerik