If the thumbnail and preview screen appear black when uploading items, make sure that hardware acceleration setting is not disabled on your browser.
Items may not display normally if hardware acceleration is disabled.
Refer to the following for information on enabling hardware acceleration.
Enabling Hardware Acceleration
Created based on PC Chrome browser.
- Click the [...] button on the upper right to enter the Settings menu
- Click [System] on the Settings menu
- Enable 'Use hardware acceleration when available' option
As shown in the image above, please note that 'Use hardware acceleration when available' option must be activated to display the item normally!