Tops of water/lava sources are not rendered when 3 x 3 area above is filled with solid blocks

Original summary
Invisible top lava when creating 3x3x3 and place 1 lava in center

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Have any screenshot/videos: Yes, I have

Have any labels: Yes, I have

Summary:

Top lava was invisible when create in step to reproduce in below. 

Step to reproduce:

1. Create 3x3x3 blocks.
2. Remove middle part.
3. Place lava in center block. 

Expected results:

Can see the lava top texture.

Observed results:

This lava top part was invisible.