The heart symbol isn't displayed because there is a typo in the death and respawn section that says :heart.
MCPE-177319
Typo in japanese translation of Death and Respawn on How to Play
Resolved
Cannot Reproduce
2
Can confirmed.
Step to reproduce:
Open Minecraft Bedrock and enter settings
select japanese language titled "Japanese (Japan) / 日本語(日本)"
Press the button that says "How to Play / 遊び方"
Look in the menus for the button that says "Death and Prespawn / 死とリスポーン" and press the button
search for a heart emoji
Expected result:
The emoji looks correct
Observed result:
The emoji does not appear and the word that replaces the emoji is :heart