Minecraft Xbox Side Buttons

I play Minecraft Bedrock on Xbox One with a Keyboard and Mouse. In a recent update, it has removed the ability for you to use the 2 side buttons on your mouse. This issue is only on Bedrock Xbox. I've tested using the side buttons on windows 10 and it works. I would like to have this back on Xbox as that is the device that I mainly play on aw well as my friend