Issue with water and strings

^{Update by Oval:}

The bug

When you drain water, some water 'stickies' to strings, this is only a visual glitch.

How to reproduce

1. Place some strings on the ground.
2. Place water, so water floats into the strings.
3. Remove the water source.
   → Some water will 'sticky' to the strings til you update the block.

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Original description
see picture