I think this bug is fixed due to unrelated bug reports that include "dead coral" in title now.
I was able to confirm resolved in v1.12.0 iphone. (dead coral can be placed does not disappear)
Report may refer to item drop of coral, which would be intended.
Idk about my comment about half slabs...
This issue should be resolved.
Dead coral fans disappear, confirmed desktop v1.11.4, June 2019. Dead coral is permanent in Java?...https://www.reddit.com/r/Minecraft/comments/96wmc6/dead_coral_fans_work_quite_well_as_snowy_flora/
I could place coral fans on half slabs in water, which popped off to. (same behavior as described above).
Duplicate of older report: MCPE-28689
Could not reproduce in 1.6.2. Resolved? IOS 11, IPad, Singleplayer
4 skeleton horses died on me, two at the same time. I didn’t notice the first two die, but I got their leashes back. All were named. (Survival world) V1.6.0 on iPad iOS 12.
Just checked for new update 1.6.1, in a creative world, the issue seems to be fixed. Sad that I didn’t update to save my horses though...
Maybe saving or unloading chunks with horses without full health could make it so they cannot be fed?
Sorry, not all horses, just a few that have lost health and cannot be healed with food. Newly spaced horses work as intended.
Lol, checking back after 2 years, thank goodness I play java. Wonder if it's still an issue...