i could not replicate this issue with the 2Bmask2 ( https://imgur.com/50csyar heres how it looks for me with 100% bloody) but something close than what you described has happened in the past with the frostmourne weapon that which i had to remake the model to fix.

Oh my bad I meant A2 (Alternate), forgive the mess up, I thought they all started with 2B.
I just checked the workshop page to ensure I had the right one mentioned first and I didn't so again, sorry for any inconvenience this may have caused.

here's what i got while testing some other stuff https://imgur.com/fksCrMy maybe its the "dirty" overlay instead? because it seemed normal with 100% blood. i also tried changing blood decals amount in options but i think it only affects blood splatted on ground

That is odd, perhaps there's something up with our side compared to mod side that is causing it.
Seeing as it appears normal on your side. I'll have someone else test this and get back to you on the results

Had another admin test it on our server, same result, the blood decal appears black, I'm not sure if it's a mod on the server causing it or if we need to reload the mod from fresh, what would you say in this instance?

(UPDATE)

They also tested the "A2 Mask" as well and that provided the same result, black texture for the blood

@Subaru Emery is it only A2 masks?, like other clothing from my mod such as socks, main clothes or literally anything else, or also masks from other skin sets also get this problem?, when testing i tried changing texture res from 1024 to 256 and see if it might break the blood on clothing since it is a overlay on the item's texture but did not find any issues still, are you running by chance any other mod that might change default playermodel's appearance?

We have a fair amount of mods on the server so I would have to have a look at the mod listing we have. If it helps I can send you the list on Discord?

The PZ server is called "[SG] KWRR Server - Season 8 [PvE]" if you wish to do some testing yourself and see if that helps, we will provide assistance of course.

Am just having issues with internet at the moment to actually get on and test the rest of the clothing.

yeah i guess so, my discord is in the description, mod load order might be a easy way to fix this problem if it is caused by other mod in first place of course, if at least i was able to replicate the problem i could try to figure out what causes it.

We'll see if the load order has been messed up when moving providers and if that fails we'll see if unloading the mod and reloading the mod would fix the issue

(Edit) I'll send you the images over discord to show you the things we've seen