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

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

FIG. 2 is a front view of a second image thereof;

FIG. 3 is a front view of a third image thereof;

FIG. 4 is a front view of a fourth image thereof;

FIG. 5 is a front view of a fifth image thereof;

FIG. 6 is a front view of a sixth image thereof;

FIG. 7 is a front view of a seventh image thereof; and,

FIG. 8 is a front view of an eighth image thereof.

The subject matter of the present disclosure includes a process or period during which one image changes into another. In particular, the appearance of the image sequentially transitions between the images shown in FIGS. 1 through 8 . This process or period in which one image transitions into another forms no part of the claimed design.

The outermost broken line rectangle illustrates a display panel or portion thereof that forms no part of the claimed design. The remaining broken lines illustrate portions of the graphical user interface or a mixed reality environment, and form no part of the claimed design.