When you are selecting an asset in the editor it jitters a little bit until unselected.
Found in 4.25.0 Preview 1 CL#11723679
Reproduced in 4.26.0 Main CL#11724764
1. Create a new project.
2. Place a cube in the scene.
3. Select the cube.
4. The asset jitters a little bit.
Result: The asset jitters when selected.
Expected: The asset doesn't jitter.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-90080 in the post.