I am experiencing a strange thing in material editor, for example when I want to create a scalar, I need to press keyboard ‘1’ at least 4 or 5 times and keep pressing left mouse button. The same happens to vector3 vector2 lerp etc. This strange thing happens in all my unreal versions, 4.25 4.27 and ue5 . I wonder if it is a keyboard buffer bug or a engine bug, or related to graphic card driver issue.
Has anyone experienced this kind of same weird thing before.
Solved.