Thank you for working on this! Search results by updated or creation date is one of the only missing things for me in Joplin (and remarkable in its absence!)
I am able to use the plugin just fine for limiting searches to title only, but when I try to search and not limit to title, it sits there for a few seconds and then the pane goes completely blank and requires me to either restart the application or select "change application layout" then immediately return.
I do have over 11,000 notes, so maybe my database (>2GB) is just too large to efficiently search with a plugin?
In any event, just being able to search note titles like this is a step forward!