Before f041f7c#diff-1750fdaab4631fe6413eff2937cbf16223a0a6aab92faf1fca69fda49fc2fd48, this is still inconsistent, but way easier to find. After this commit, it became very rare, but supposedly there are still reports of it.

Example of a section that is missing light. The section above is not missing light. From this video, on 1.20

I'm pretty sure this is fixed, but can't be sure given we never had clear steps to reproduce it. Some people which used an earlier revision of Sodium (for testing the NVIDIA driver workarounds) were experiencing this bug, but those people reported that it stopped happening in Sodium 0.5.0-beta2.

Let's assume this is fixed given we haven't seen any user reports in the beta builds, and if we find out it's still happening after release, we'll re-open this.

Possibly fixed with 5911a33?