Summary:
The wall does not rise properly under the candles. The dimensions of the wall uplift, as if a complete block were placed on the wall. This also does not match the Java version.
Steps to reproduce:
Place the complete block (due to MCPE-130695).
Place candles on it.
Remove the support block.
Place (minimum) wall block 3 in a row (center block under the candles).
Observed results:
The size of the uplift of the wall, as if there were a full block above the wall.
Expected results:
The size of the wall uplift will be the minimum.
Image:
Java
Bedrock
Confirmed. This is possibly because the candle hitbox appears to be larger than it should be.