Can't edit Content with Node Picker links when "Display memory usage" in Devel module is active

First of all thank you for this incredible useful module! I wouldn't want to use Drupal without it.

At the moment I use Node Picker version 6.x-1.0-alpha3 and I encountered a minor issue when trying to edit a node with Node Picker links while the option "Display memory usage" in the Devel module is checked. When I try to edit the node, the editor area (CKEditor as well as TinyMCE) remains empty.
With FireBug I tracked the problem down to the response to the Ajax request:

http://example.com/index.php?q=nodepicker/ajax&tag=[nodepicker==...........

When "Display memory usage" is checked (probably with other "display options" too), the response looks like this:

{"href":"node\/1","title":"Title","link_text":"Link"}<div class="dev-memory-usage"><h3>Memory usage:</h3> Memory used at: devel_init()=<strong>1.23</strong> MB, devel_shutdown()=<strong>9.88</strong> MB.</div>

Obviously the <div> appended by the Devel module causes the trouble.

Of course this is not a big thing, but I thought I'd just mention it, in case somebody else stumbles across the same issue.
And maybe there even is a simple fix for it.