The last version of the mod (immersive-armors-1.1.3-forge.jar) fixed the incompatibility with First Aid, but now all armors type except the ones from this mod, doesn't render at all in the player model (both in inventory and outside of it), tho the stats work, it's only a visual issue from what i've tested so far. Here is a picture of the issue:

Forge version: 36.2.34

Also, I found out that the Heavy Armor doesn't render correctly, it DOES render (unlike armors from other mods), but it's not correct, since Hats, Sleeves, and all the skin's parts, doesn't render and are "cut out" instead, leaving only the basic layer of the skin. For example, the gauntlets doesn't render and instead I see my hand with the top of the layer removed. Here's a pic:

Hope I explained it correctly

First issue is a bug introduced with the cosmetic armor mod fix...
Second issue is not an issue, it blocks the second layer since it would overlap the armor. On the hand however it should still display, thanks.
If you do not like this, you can change that in the config file.

Oh, thanks for explaining! I didn't know it was a config, btw, even if I turn off the cosmetic armor mod, the skins still appear to be invisible, don't know why

I've literally tried removing all mods except this one, and it still has the issue, here's a pic:

Forge - 36.2.34 (1.16.5)
immersive-armors-1.1.3-forge.jar

It's definitely an issue on my side, I'm already testing and will release in a few minutes :)

Wish others mod developers could be like you, I love your work! Keep it up :D

Thanks :D I'm glad you are helping me! If you have time, please try the 1.1.4 version on CurseForge before I upload the other MC versions too. Both issues "should" be fixed, and hopefully I didn't introduce another one.

Yes! Finally! Thanks again, and see you at the next issue! ^^

I did a quick test, and everything seems to works fine! ;)