Photoshop certain layers have low opacity despite "Opacity being set 100%"

[Kou123]

So everything at the overlay layer has insanely low opacity. I have no idea why. Even when dragging new tiles on that layer, it becomes the low in opacity. How can I do to fix this?
I finished the map right now. I'm just figuring out how to overlay with the orange plugin.

 

[ShadowDragon]

the problem might be group opacity, if that is 20, every layer inside become
that opacity as well, so it's not layer opacity you might have used.

 

[KenSoulslayer]

Definitely looks like a group transparency issue

 

[Andar]

or you could have activated layer effects, but in previous versions of Photoshop those were visible in the layer list (never bothered to purchase a photoshop newer than the CS2 as that is enough for me)

 

[Orex_]

That happened to Me when I adding stuff I basically Just restarted and it was fine.

 

[Kou123]

Thanks, I got it worked now. It was a group layer issue.