It´s not possible to see more commands with scroll

Summary: 

A parity problem, when writing commands, you can´t go up or down your screen, making it hard to write commands

Observed Results: 

1. Launch Minecraft Bedrock Edition
2. Open chat and write a command (preferably gamerule)
3. Try go up and down with scroll

Observed Results:

In Minecraft Bedrock Edition, you can´t find other commands by using scroll. You´ll have to find them for letters or use /help command, just like the video

Expected Results:

Just like Minecraft Java Edition, you should be able to use scroll and find all the commands you can use

Screenshots/Videos Attached: Yes

Notes: The problem occurs in all Minecraft Bedrock Edition devices