1.When switch folder, if it takes long time to show content in Results Log, Origin will pop up a message box asking for clean up.

The texts in Results Log window is very long, which may slow down Origin.
It is recommended to clean it up. Do you want to proceed now?

Yes will open the Clear dialog (Results Log context menu "Clear...").
If user selects No, the dialog will not show again in the same session.

2. Add a "Clear All" button on Clear dialog, clicking it will close dialog and clear all contents in Results Log window.

This issue is fixed in Origin 2021b.