Lava was in a rivine, I started placing water. I reclaimed it so fast that there wasn't a full block (about 3/4 of the block) and it had ifinite water.

Put the summary of the bug you're having
"I expected the water to disappear"
Describe what you thought should happen here

The water kept on going on a less-then-full water source block
Describe what happened here

Steps to Reproduce:
1. Place the water block
2. Reclaim extremely fast
3. For me it SHOULD take couple of tries and make a water source