I was mining some Quartz in the Nether when I walked through a space with no blocks and it started to glitch out and slow me down. Kinda like a Cobweb

What I expected to happen was...:
to walk normally like no block was there

What actually happened was...:
I walked through an area with no blocks after mining some Quartz and it started to slow me down like I was in a cobweb and glitch a little

Steps to Reproduce:
1. Be in the Nether
2. Have a Efficiancy IV pickaxe
3. Mine Some Quartz

I don't know if this is how you reproduce this but I have a video of what happened.