For a general rule to help with troubleshooting, Meraki Systems Manager runs the following command to collect the apps installed on macOS:
system_profiler -xml SPApplicationsDataType
Feel free to check the local output of this^ command to make sure the apps were cleared from system_profiler on the macOS device. If they are removed locally with the system_profiler output but never removed from Dashboard, please open a Meraki support case for this with the reproduction steps outlined and we should be able to get this over to the development team for further review.