As mentioned in the title, the new Time to Stew achievement doesn't appear on Windows Phone. It still shows 103 achievements for a total of 2380 Gamerscore. The 104th achievement time to stew for 20 gamerscore does not appear, despite the fact that all other versions have received it.
Thanks this is now fixed
MCPE-54591
EDIT: FIXED------------ Time to Stew achievement doesn't appear on Windows Phone
Resolved
Fixed
1
It appears that the Time for Stew achievement was added to Minecraft for Windows 10 Mobile as of 4 November 2019, bringing the total to 104 achievements and 2,400 Gamerscore. And now to actually unlock the achievement myself...