ISSUES NOT USING OUR TEMPLATE WILL NOT BE CONSIDERED AND WILL BE CLOSED!

Describe the bug
I can only place blocks for a little bit before it stops. When I try to place the block shows up and disappears along with taking a block out of my inv.

To Reproduce
I have no idea, I was screen sharing on discord with a chrome tab open.

Expected behavior
After reloading my world it works for a minute then it stops showing the blocks I'm "placing" but takes one away.

Screenshots
If applicable, add screenshots to help explain your problem.

Info (please complete the following information):

• Modpack Version: 2.76.1
• Server or Singleplayer: singleplayer
• Version the world was created on: 2.76.1

Additional context
Still happens after I restart my game. I was talking on discord while screensharing, my game seems more laggy, and I had joined my friends server before getting on singleplayer.

Sounds like you're lagging. Reinstall the modpack and don't screenshare or anything.