From as i can see this works as intended. You are trying to move camera using 2 fingers which is gonna be buggy because it wasn't intented to work that way.
Anyways if you want to suggest a feature do it on feedback.minecraft.net
Hi, unfortunately you did not provide steps to reproduce this bug in your post. Please try to update the post and add more information.
From as i can see this is not a bug. This is a missing feature. If you want to suggest it do it on feedback.minecraft.net