It happens every now and then (mostly when the Macbook was locked or in sleep mode) that my mouse and keyboard (MX Master 3 and MX Keys) are no longer recognized correctly by the software.
In addition, all specific settings, such as key assignments, gestures, etc. no longer work. To fix the problem, the current user has to be logged out and logged in again. A restart also helps.
The problem also occurs with the old Options software.