Würde dann das hier beschriebene probieren
https://answers.microsoft.com/en-us/msoffice/forum/all/spacebar-and-type-issues-on-ms-office-apps-on-mac/2076623d-33c1-4bf1-820d-353385189dbb
https://answers.microsoft.com/en-us/msoffice/forum/all/spacebar-and-type-issues-on-ms-office-apps-on-mac/2076623d-33c1-4bf1-820d-353385189dbb