In the 1.2.14 beta, in creative mode, while holding shift and casting a fishing pole at a boat, the bobber causes non-living entities (i.e. boats and minecarts) to disappear. it only affects creative mode, not survival mode.
Linked issues
is duplicated by 8
MCPE-43611
Minecarts disappearing when touching fishing rod bobber
Resolved
MCPE-49954
minecart and boat disappear when fishing hook attached on it in creative mode
Resolved
MCPE-63927
Fishing rods break boats and minecarts
Resolved
MCPE-113281
Fishing rods break Minecarts without dropping them
Resolved
MCPE-147533
Boats dissaperaing when hooked by fishing rods
Resolved
3 more links
Confirmed in 1.2.13.54 on Windows 10. Affects every type of minecart and boat.
Steps to reproduce:
In creative mode, place a boat on the ground or in water.
While holding a fishing rod, press and hold SHIFT and right-click on the boat. Note that if you aim too high, you will cast beyond the boat and the boat remains visible with the fishing line appearing attached to it but it actually goes through the boat.
Expected results:
The fishing hook attaches to the boat, allowing you to retract it to pull the boat toward you.
Actual results:
The boat is destroyed and the fishing hook attaches to the ground or floats on the water.
Also, if you perform this test with a chest minecart, holding down SHIFT and right-clicking both casts the fishing line and opens the chest inventory UI.