I get the following error. Build 4730.
com.inductiveautomation.ignition.gateway.web.pages.config.systemconsole.LogViewer$SerializableLoggingEvent$ClonedThrowable: Executing UPDATE PROJECT_RESOURCES SET Data = ?, LastEdit = ? WHERE ResourceId = ? AND LastEdit = ? for [ProjectResourceRecord 52 Dirty1]
This is a bug in the development release only. You can work around it by always making sure to make at least one change to the dropdowns. You can alter the title, change one of the dropdown fields, and then go back and change the dropdown field back to what it was.
This is a known bug in the development release, and will not be present in the production release.