Items and yourself cannot fall into cauldrons.

Confirmed on Samsung Galaxy tab s4. Android 5.0.1. 0.14.0. build 1.

I was expecting to be able to stand inside a cauldron, which can be used to extinguish fire if filled with water. (Useful if you are being attacked by Blaze, for instance.)
This seems to be a missing feature.
Tested on Samsung TabPro SM-T520

Confirmed as of Build 3
Tested on Samsung GalaxyS4 mini

Confirmed Samsung galaxy note 3 Android 5.0 MCPE version 0.14.0 build 5

I have the same problem. Thanks for reporting this issue.

This bug is still present in 0.14.0 Official Release

This appears to be fixed in 0.15.0 b1

i can get adult chickens to stay in a cauldron if I place a carpet on top, but baby chickens will leave, even if the cauldron is surrounded by stone blocks. i used a dispenser and spawn eggs to get the adult chickens in fine, and used regular eggs in the dispenser to put the baby chickens in. i did it in creative on win10 Beta.

@unknown You will need to create a separate bug report as this issue is related.