Hi,
I found this morning that I had this very same issue. It looks like Kemper it's not the only hardware that's having this same problem of sending unwanted midi info to the device, so looking around I found this solution that seems to work for me.
"With logic not running.
In the Finder, choose Go > Go to Folder from the menu.
Type ~/Library/Preferences in the "Go to the folder" field. (note: type exactly)
Press the Go button. Then delete the com.apple.logic.pro.cs file from the preferences folder.
The file will be rebuilt to defaults next time Logic starts"
Hope it's useful!