Description
When having smooth lighting enabled, both maximum and minimum, the lighting projects a shadow on ascending/descending staircases. This can even occur with a light source next to the block surrounding. It seems that this affects certain sides; the block next to the stairs, slabs, snow-layers or even above full blocks, whereas above in the opposing direction is also affected. This occured even after reinstalling 1.15.
Scenario
Within this scenario, there is a block difference of 4 between the ceiling and stair. This can also occur to full blocks and at different heights.
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Comments


I found that my graphics card was out of date and updated it, however it didn't resolve the problem (which was expected). I also reinstalled java, nothing happened. I looked into the Minecraft settings and found that smooth lighting is the only cause of this issue.