Display screen or portion thereof with animated scrollbar graphical user interface

FIG. 1 is a front view of a first image in a first embodiment illustrating a first sequence of a display screen or portion thereof with animated scrollbar graphical user interface, showing our new design;

FIG. 2 is a front view showing a second image in the first sequence thereof;

FIG. 3 is a front view showing a third image in the first sequence thereof;

FIG. 4 is a front view showing a fourth image in the first sequence thereof;

FIG. 5 is a front view showing a fifth image in the first sequence thereof;

FIG. 6 is a front view showing a sixth image in the first sequence thereof;

FIG. 7 is a front view of a first image in a second embodiment illustrating a second sequence of a display screen or portion thereof with animated scrollbar graphical user interface, showing our new design;

FIG. 8 is a front view showing a second image in the second sequence thereof;

FIG. 9 is a front view showing a third image in the second sequence thereof;

FIG. 10 is a front view showing a fourth image in the second sequence thereof;

FIG. 11 is a front view showing a fifth image in the second sequence thereof;

FIG. 12 is a front view showing a sixth image in the second sequence thereof;

FIG. 13 is a front view of a first image in a third embodiment illustrating a third sequence of a display screen or portion thereof with animated scrollbar graphical user interface, showing our new design;

FIG. 14 is a front view showing a second image in the third sequence thereof;

FIG. 15 is a front view showing a third image in the third sequence thereof;

FIG. 16 is a front view showing a fourth image in the third sequence thereof;

FIG. 17 is a front view showing a fifth image in the third sequence thereof;

FIG. 18 is a front view showing a sixth image in the third sequence thereof;

FIG. 19 is a front view of a first image in a fourth embodiment illustrating a fourth sequence of a display screen or portion thereof with animated scrollbar graphical user interface, showing our new design;

FIG. 20 is a front view showing a second image in the fourth sequence thereof;

FIG. 21 is a front view showing a third image in the fourth sequence thereof;

FIG. 22 is a front view showing a fourth image in the fourth sequence thereof;

FIG. 23 is a front view showing a fifth image in the fourth sequence thereof; and,

FIG. 24 is a front view showing a sixth image in the fourth sequence thereof.

The outer perimeter shown in dashed broken lines in FIGS. 1-24 illustrates a display screen or portion thereof that forms no part of the claimed design. The remaining dashed broken lines in FIGS. 1-24 illustrate elements of the graphical user interface that form no part of the claimed design.

The appearance of the transitional sequence sequentially transitions between the images shown in FIGS. 1-6 (the first embodiment), FIGS. 7-12 (the second embodiment), FIGS. 13-18 (the third embodiment), FIGS. 19-24 (the fourth embodiment). The process or period in which one image transitions to another in each embodiment forms no part of the claimed design.