Playing 1.16.5 and noticed after placing the frame ladder that they aren't climbable at all, blank or with a skin. They're definitely supposed to be, right? I thought it may have been Quark's enhanced ladders, but disabling those didn't have any effect.

Installed the mod by itself in a fresh profile and same thing, just can't climb it. Am I missing something?

I can't recreate this problem anymore (at least in 0.3.9), so I'll close this issue...

Have you tried using the block tag #minecraft:climbable? Ladders, vines, and scaffolding all use this tag in 1.16.

No, I didn't think of it, I'll add the ladders to this tag. Thank you very much!

No problem!

Yeah I already noticed that... I don't know why, but sometimes, ladders don't work and to other times they work. I recognized it when I was playing Enigmatica 6, and I was pretty confused, because it worked for me, when I tried it with a fresh installation. Pretty weird, I don't know what causes it, it seems to appear somehow random. I'll fix this asap, but right now, I'm having a lot of work to do for my studies. Thanks for reporting!
Regards, Manu