Currently IC seems to operate in either traditional mode or DX mode, and the only way to switch to traditional mode is to delete your sfdx-project.json file. This does not work out so well, because we often need to use the same project to look at scratch orgs and dev orgs. It is not always one or the other. It would be simpler if you could switch modes based on the org you are connecting to. If a scratch org, use sfdx force:source, else use sfdx force:mdapi.
Issue #1001 new