Chunk not loading on screen sides [21:9]

Since the last update 14.4.4 I'm encountering this glitch a lot.

When I simply stand still and look around, there's a certain point when the sides are not renderized anymore, or better...there's no chunks and I can see mobs and such.

In BUG_2 and BUG_1 you can see the example, the same spot just moving around a bit and the chunk is loaded.

If you need more details, just ask.

Thanks!