The QuickInfo widgets/status lines are shown even when they are inactive.
In MStatusLine.getStatusLinesWidget(...), it only checks IsActive for AD_StatusLineUsedIn and not for the master record.
Steps to reproduce:
Configure any Quick Info for the Sales Order Window.
Open Sales order and verify that the Quick Info is shown
Go to the Quick Info record and deactivate it
Open the sales order window
The quick info that was deactivated is not shown anymore
Quick info is shown despite being inactive
Attached you can find the patch that solves the issue.