In the modern experience, log in as a user that has > 2000 items in their OneDrive recycle bin.

Overview

• User is unable to empty their OneDrive Recycle Bin.
• Clicking “Empty Recycle Bin” only deletes 102 items and not all items.
• Scrolling down past 2000 items generates an error.

Steps to reproduce 

1. Navigate to OneDrive
2. Click Recycle Bin
3. Click Empty recycle bin
4. Note number of 'selected' items (102 by default)
5. Scroll down (again and again) until over 2000 items loaded
6. Note error in browser

Workaround

1. Open a new ‘In-Private’ or ‘Incognito’ browser winder
2. Navigate to https://portal.office.com
3. Click OneDrive
4. In the lower left, click ‘Return to classic OneDrive’ 
5. Select Recycle Bin link in left navigation
6. Select Empty Recycle Bin
7. Close the browser window