I have the mod enabled. I am not getting any errors, I can use the folder just fine too BUT I still have and see all the clothing in my backpack from basic items such as socks to modded armor.
I tried: Using Y + Shift, unfavorite the clothes and equip them in various combinations from picking them from floor to using the folder to equip them from floor and inventory both favorite and nonfavorite.

Do you have the mod Gourmet Revolution from Snakes Mod Pack ? If so, it's a know issue. Can't do much, it's from the other mod

Oh. I do, yes, but I would not have the items in my inventory. I understood it as if I have items from the mod, those items wont hide. Apologies again. Ill keep both mods as yours is something I was looking for for ages and snake is just big and adds plenty things for me to abandon.

Sure, from what I know it's a minor issue so no problem to play with both. Maybe the creator of the snake modpack gonna fix it if my mod get enough sub

@MrBounty -- In regards to the latest update and the lag from the Equipment window... nope, it still lags significantly when I open it. Same as before the update.

@Monario That weird, do you have the possibility to make a video ? Because I'm lacking informations to solve the problem

@MrBounty -- Not really :( Though it's not a big issue, I wouldn't keep that window open all the time even if it was super smooth anyway. What I will say is I have like 110 mods installed lol, though my FPS are a solid 60 when I'm standing still, but dip when opening the window.

Maybe it's because I'm using modded clothing and weapons on me, I'm not sure.

I'm just checking in-game right now, my FPS go from a solid 60 standing still, to 18 with the equipment window open xD

Work fine on my pc, maybe comming from one of your mod. Is it still laging when the window is collapse ?
Also, can you use different freshrate to see if that change something ?

@MrBounty -- I haven't tried with the window open by collapsed. I'll try it when I get back in the game and let you know!

Maybe try to increase the ram of project zomboid too, if you use a lot of mod that help

I actually tried that just before I went in to try the latest mod update, it didn't do a thing for me lol. It's really not that big of a deal, I can handle low FPS when the equipment window is open while I take things on or off. This is all the reason I didn't feel this was a bug xD it's probably me.

@MrBounty -- I'm in game now, and indeed when the equipment window is open but collapsed, my FPS are fine, then when I mouse over the collapsed window and it expands, the FPS drop again.

No no, you right. I'm still lagging too. But I think I found why

@Monario Should work now