Diet Hoppers Mod 1.12.2/1.11.2/1.10.2 will modify the technique that the game calculates the collision boxes of the hopper. So, it’s possible for you to access every visible block behind it.
Other information about Diet Hoppers
It is a mod by rwtema. It adjusts the collision box for the Hopper. After that, you can interact with an observable object existing behind it.
Remember that the current product needs to stay on both client and server sides! That requirement will help your machine prevent desync issues.
You can include it into any mod pack of your own for free.
Diet Hoppers is a mod that is effective to improve problems around energy, fluid, and item transport. Download and install Minecraft Forge to start!
Screenshots
Download Links
Minecraft Mod 1.12.2
Minecraft Mod 1.11.2
Minecraft Mod 1.10.2