Tested on resolution 720X1136 works in full screen but retains a small bug as shown in the picture.
Spoiler: IMG
I have this in sys.txt
Problem solvedCode:[loading]
show_statustext=0
show_progressbar=1
progressbar_x=0
progressbar_y=0
Code:[loading]
progressbar_x=150
progressbar_y=0
progressbar_end_x=150
progressbar_end_y=0
progressbar_end_bmp=""
Spoiler: IMG