Armor stand equipped with frost walker boots don't create frosted ice when pushed by pistons.
How to reproduce:
Place an armor stand on the ground near water
Equip it with boots enchanted with frost walker
Push it with a piston.
The water nearby does not turn to frosted ice unlike Java.
Related issues
Comments


Still in the latest version.
Thank you for your report!
However, this issue has been closed as Postponed.
Going forward we're going to be tracking parity issues and feature requests on the Minecraft Feedback Site, and we'll only be tracking bugs here at bugs.mojang.com.
We're already working on achieving parity across versions where possible, and we're very keen to hear your requests or suggestions, so we'd encourage you to make a post at https://feedback.minecraft.net, or upvote an existing topic there.
If you're not sure whether your issue is a parity request or a bug, hopefully this article will help explain further: Parity Request Guide
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Feedback – 📖 Game Wiki

it works when the armour stand is on the slimeblock. like here https://www.youtube.com/watch?v=oPDbsBeyQNY&t=4s

To clarify the preceding comment, armor stands with frost walker boots do create frosted ice, but 1 block lower than expected. See MCPE-41398.
As this appears to be a feature that has been implemented, but not working as expected, we will continue to track the issue at MCPE-41398.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki
I was able to reproduce this issue on 1.5.2 using Windows 10. I can add a world to test this issue (even though it is not too difficult to make a redstone setup for this issue)