For some controls it is desirable to not use the morphing transition when presenting a Menu. Instead, you might want to have the old behavior, where the menu is presented above or below the initiating view. This can be the case for any other control than toolbar items, but especially for bigger content cards, that should trigger a menu upon tapping it once. In those cases it looks weird and does not really help to keep context of what the action is doing.
Is there some way to do this right now?
In case it's not, I also filed a feedback. FB18413055