Mouse 5 and Mouse 4 buttons are not in MC?

Have mouse 5 and mouse 4 in minecraft tied on 8 and 9. When i press wasd press the buttons but when i press shift or other buttons the buttons will not work anymore? Have the Razer deathadder elite; ^)

Ask for help, thank you!

Do you have a setting in your mouse driver (I think it should be Razer Synapse) that the hotkeys are not working when you press the other button?

Thanks for the answer! Yes it was because of it. In the driver there was still a default profile and if I play with the games, everything goes perfectly Thank you!

With pleasure!