Some chuncks get unload almost when you ar seeing them

What I expected to happen was that I had the chuncks unload when I don´t see them

What actually happened was that when I open a chest or the crafting table I see in the corners of the screen a part of a chunck that gets in blue (unloaded)
Steps to Reproduce:
1. Open the crafting table with the sight inclined at a border of a chunck
2. Watch the corners of the screen and you will see a chunck unloaded