Update: I shifted a few things around and I think I fixed everything, though is there a way to prevent the text display from being visible outside of the UIAxes window? It's sticking out on the right side
% Display the message back to the User on the UIAxes in the Right Panel
ax = app.UIAxes;
ax.Parent = app.RightPanel;
ax.Color = bgColor;
ax.Box = 'on';
hold on
for i = 1:(length(display)+1) % Loop once for length of entire message
cla(ax) % Clear previous Axes
text(ax,0,0.5,display,'Parent',app.UIAxes,'Color',txtColor,'FontSize',72,'FontName','LED Counter 7'); % Display message as text
display = circshift(display,-1); % Circle Shift character array, Scrolling Left
i = i + 1; % Increment i
pause(0.5); % Pause for 0.5 sec
end