Describe the bug
When I made the backpack and put it on my hearts would have white lines and the heart textures would look unusual.

To Reproduce
Steps to reproduce the behavior:

1. Make the backpack or find one or obtain one.
2. Put it on.
3. presto! The hearts looks weird and has white lines going through them and on top of them and beneath them. Possible would still look like how they do in the screenshot that I've provided with any resource packs.

Expected behavior
The hearts textures should be normal and no weird white lines on top of them and the bottom and even within them.

Screenshots

Required informations (please complete the following information):

• Mod version: 1.18.1 7.0.1 or possibly any 1.18.X versions.

Additional context
I do have a mod that changes the appearance of the health bar called Scaling Health but I don't think that Scaling Health has anything to do with this and neither does any resource packs that I'm using since I'm also playing on a modded 1.16.5 world with both mods installed and not seeing anything like this in the 1.16.5 version of them both.

I'm currently using both this mod and another backpack mod that's alot like Iron Backpacks mod but mostly using the other backpack mod to carry my items while using this mod for it's sleeping bag since the other backpack mod doesn't have a sleeping bag/sleeping bag upgrade.

https://www.curseforge.com/minecraft/mc-mods/travelers-backpack/files/3667528

Sorry for not replying back to you, I don't have any way to get notified from GitHub but I'll be testing/using the latest version a little bit later cause my internet speed is really slow right now (possibly rush hour as of internet right now) which would cause my game to lag pretty badly..

Anyways thanks for fixing the graphical/visual(?) bug since I think I would've been able to see that bug with and/or without any resource packs applied, I wasn't wearing the Traveler's Backpack in the back slot in Curios till the bug was resolved which it is now, hopefully.

When I first saw it I didn't remember my hearts looking like that with the older versions of the mod and didn't want to downgrade to the previous versions so I'd put it in my backpack from Sophisticated Backpacks mod and only used Traveler's Backpack for it's sleeping bag.
Since Sophisticated Backpacks doesn't have a sleeping bag or sleeping bag upgrade or else I would've replaced this mod with Sophisticated Backpacks since that mod is the spiritual successor to Iron Backpacks mod which that mod may have died (no longer maintained) in 1.12.2 by the looks of it...

Also, what I've said in the additional info I don't know exactly why I mentioned 1.16.5 when clearly it was happening in 1.18.1 BUT the bug could've happened in 1.16.5 as well but why I mentioned 1.16.5 is cause at the time I reported the issue I had another world that was for 1.16.5, my 1.18.1 world nearly had the same mods than my 1.16.5 world but for 1.18.1.
But I decided to stop playing in 1.16.5 as a whole cause in the logs whenever my game crashed or anything else that hindered my gameplay overall that I saw some of the mods I'm playing with was changing their config settings between the versions of the game and mods which I'd found annoying and was causing log spamming aka lag.

For one mod in particular (Infernal Mobs mod) I had to latterly take out it's old config (Infernal Mobs 1.16.X config) and let the new one generate (infernal Mobs 1.18.X config), when the new one was generated I had to switch between it's 1.16.X and 1.18.X configs since the modder made some changes in their configs between 1.16 and 1.18..

Is it possible for you to check if the bug still persists, if I send you updated version in private message?