I had confirmed a bug of new IDE about the time zone of Google Apps script project. When I created new Google Apps Script project using new IDE, the time zone of GAS project is always America/New_York. In my area, it’s Asia/Tokyo. The time zone can be confirmed at appscript.json.
So, I had reported this issue to Google issue tracker. Ref After I posted this, I had also confirmed this issue at Stackoverflow. Ref
Today, I got a report from Google issue tracker. When I tested above, I could confirm that the issue was removed. When I created new Google Apps Script project, I confirmed that the value of timeZone in appsscript.json is Asia/Tokyo. So I reported this here.