I was able to find these items in the other Minecraft education edition application, but since then the features of education edition are missing in the 3rd category and a first category on bedrock edition with the toggle of education edition is "on", but it doesn't work at all on bedrock edition.
Could you confirm?
The missing features in the Education edition toggle is "on".
Education features in 3rd category:
"Chalkboard": Slate, Poster, Board
"Camera"
"Portfolio"