Description of my actions below. 1) I imitate my timelapse. I create two sets of photos 1 and 2. 2) I import my photos. 3) I place two sets sequentially on the timeline and make the duration of each image in 1 frame. 4) I create a new sequence and place the sequence from the previous step on it. I will demonstrate that in the first part of the clip you can see 1 in the second part 2. 5) I place again the sequence from step 3 on a higher video track. I will demonstrate that a high video track is more priority than a low one. 6) I create a new sequence and place the sequence from the previous step on it as step 5. But!!! Now you can see that the priority is on the lower video track. It can be seen that switching the upper video track does not affect. And switching the lower video track has an effect.
The question is why is this happening? Why in one case is the priority of the upper video track, in the other lower video track? Is this a bug or am I doing something wrong?