So I was playing some survival, mining and stuff. When i Came across a lava source I wanted you stop it (by placing blocks, I had a Netherite pickaxe in my main hand and a stack of Stone in my off hand) behind the lava source was a redstone ore. I tried placing the block with clicking (right mouse pad) but nothing happend only the animation was played. Later still nothing happend (I waited a bit because i was playing on a server). Later i tried in single player and the same thing happend I could not place a block from the offhand on top a redstone ore.

If there is anything you didn't understand I Will try my best to make it clearder. (My English isn't that good). 

I hope Mojang van fix it. And I wish them good luck.

If you have any tips on how you be better at reporting stuff let me know. And if you have the same big as me let me know.