[IE8-10] Weird failure in selection/editor test in build mode

[Piotrek Koszuliński]

​http://tests.ckeditor.dev:10450/tests/core/selection/editor#tests%2Fcore%2Fselection%2Feditor%20-%20test%20initial%20selection%20after%20set%20data%20in%20autoparagraphing%20inline%20editor

I found out that this test is red when the previous editor has the elementspath plugin enabled. Precisely - when the bottom space is created. This sounds like a nonsense, but should have a manual test if we plan to ignore this test.