HI!
First of all, thank you so much for making this mod. I truly enjoy the experience of seeing the whole skin's body while taking a walk on my Minecraft world, it makes it much more immersive.

However, I noticed a little bug while using the Traveler's Backack Mod on my Fabric modded world. I wasn't sure if this was a problem with the backpack mod or with the first person model but i decided to make the issue here.

As you can see on the images below, when diving underwater with the head aiming completely down, part of the backpack clips into the screen, making seeing underwater a little bit annoying:

It seems that it's the upper part of the backpack the one it clips:

It looks like the offset doesn't apply correctly to the Backpack. Not sure how well this can be fixed, I will take a look later.

Added some new api, best-case the mod just hides the backpack while this mods First-person is active and the player is swimming.