Bows are invisible in the nether

When I was going to shoot arrow with a bow to kill a gast when I looked my hotbar shows bow but when I looked at the screen the how is not visible when I create a world and go to nether the bow is visible in screen but after 1m it disappeare in the screen and it reduces the experience and I like to look at the bow when it is pulling pls fix it I am playing in Minecraft pocket edition 1.17 and it disapper and also I used punch 2 enchanted bow to testing if monjang is looking at the report is fake or true pls use punch bow for testing pls take this report seriously