Default [Q] Halo's resize windows feature AOSB rom

Hi everybody,
I use AOSB 1.2.9 rom on my Samsung Galaxy S4 int. (jfltexx) and I didn't get how to resize and move halo floating windows. ROM's changelogs say that the feature is avaible since 1.2.4 version, but I can't find it. Is there somebody who can help me please? I don't think that install the xhalo mod via exposed framework is the solution, cause the feature should be already active in the ROM.
Thank for your attention and forgive my bad English