Display panel or portion thereof with a transitional mixed reality graphical user interface

FIG. 1 is a front view of a display panel or portion thereof with the graphical user interface showing a first image in a sequence of the design;

FIG. 2 is a front view of a display panel or portion thereof with the graphical user interface showing a second image in the sequence of the design;

FIG. 3 is a front view of a display panel or portion thereof with the graphical user interface showing a third image in the sequence of the design; and,

FIG. 4 is a front view of a display panel or portion thereof with the graphical user interface showing a fourth image in the sequence of the design.

The subject matter of the present disclosure includes a process or period during which one computer graphical user interface component changes into another. In particular, the appearance of the image transitions between the images shown of the design described above. This process or period in which one computer graphical user interface component transitions into another computer graphical user interface component forms no part of the claimed design.

The broken lines depicting a display panel or portion thereof are included for the purpose of illustrating environmental structure and form no part of the claimed design. The broken lines depicting text, numbers, symbols and icons illustrate portions of the transitional mixed reality graphical user interface and form no part of the claimed design.