Windows 10, Java 1.8.0_51 64bit (according to the F3 screen)
Basically the title. Rain seems to completely ignore blocks in certain areas. You can also hear it while underground.
What I expected to happen was...:
Rain shouldn't fall through blocks.
What actually happened was...:
Rain fell through blocks. Pretty self explanatory.
Steps to Reproduce:
1. Wait for rain (or start it yourself with commands)
2. Look for areas where blocks are getting ignored.