The bossbar of the wither seems to dissapear when you just died and the chunk the wither is in gets unloaded visiting that chunk again the bossbar dissapears but the wither is still there.
MCPE-47445
Bossbar dissapears after death
Resolved
Duplicate
0
Thanks for your report! However, this issue has already been reported as MCPE-40316. Make sure to search before posting an issue. Also, if you have anything to add to the conversation comment on that ticket. Have a great day! 😃