Premiere CC adds keyframes after restart

Hey there,

since the new update premiere cc (11.1.2) adds keyframes for speed - even if i delete them before saving! The keyframes don't appear in the edit page and seem to be added randomly in the timeline after restart. (See the screenshot below - got to the keyframe 'position' by switching through them via the arrow keys beside the speed keyframe.) One with 100% somewhere before the clip and (as shown in the screen) one with 0% value somewhere behind the clip. Kills of stabilizers and slows down long clips like interviews and leads to problems with audio sync etc.

Please help