There is no code, I was talking about Blueprints. By debug mode I meant just breakpoints on Timelines. I’ve checked step by step and it works like one would expect, m-r-m-…-m-r, where ‘m’ and ‘r’ stand for movement and rotation Timeline iteration respectively. There are m-m and r-r sometimes, again - like one would expect. And I can see in Preview window that object actually rotates while moving. When there are no breakpoints, object moves first and then rotates.
One Timeline with two tracks is not a solution. Assume rotation can be triggered by some event while the object moves.