When you place a boat in a corner it falls through the block

Steps to reproduce

1. Place 2 solid blocks, one diagonally up from the other.
2. Place a boat on the lower block while pointing the crosshair within about 1/4 block width of the edge nearest the upper block.

Expected result

The boat rests on the lower block.

Actual result

The boat falls through the lower block.

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When you spawn a boat in a corner (as shown in photo) It falls through the block you spawned it on. If you break the block you spawned it on and ride it there is a little section where you can see through your world but go any further and you will suffocate.

 

Note: By the way I did this in creative