Grids Minecraft Texture Packs

What is this grid-like ground texture? Is it my texture pack or some weird setting? It's a bad picture but in-game I can see through the ground and it's very irritating.

Ara - minecraft texture pack practicing/ideas

Aurrora Grid - Minecraft Font Converter

Grids, by Dave Minecraft Texture Pack

25 Best Minecraft Texture Packs (2023)

Ore Grids - Minecraft Resource Packs - CurseForge

Best Minecraft Resource Packs - Apex Hosting

Default w/ Grid / Outline Minecraft Texture Pack

10 Best Simple & Low-End Texture Packs for Minecraft – FandomSpot

Premium Vector Square tile pixel art set. different ground texture grid collection.

Modular Level Creation, Tileable Textures, No Padding, and Seams. Help. - Unity Forum

Mob Vote Pack - Minecraft Resource Pack

Aurrora Grid - Minecraft Font Converter