Black screen after reboot or refresh

Describe the bug
Using Chromeboxes running ChromeOS 97.0.x and Kiosk 9.3.0. After configuration, webpage will load without issue. The second attempt to load, either after a scheduled reset or reboot, will go through the splash screen, then load a black screen instead of the website. Video is still being sent to the display, but it's just black. Reproducible on a brand new configuration after a reboot. Only way for page to load again is to enter configuration screen, and clear cache and exit. Will load once, then the next reset or reboot will result in a black screen again.
To Reproduce
Steps to reproduce the behavior:

1. Configure JSON in admin console.
2. Reboot device. Page will load normally the first time.
3. Reboot or scheduled refresh, will load black screen instead of website.

Expected behavior
Chromebits running Chrome OS 8x.x and Kiosk 9.3.0 are working without issue. They auto reset hourly and reboot daily and load the web page properly each time.

Screenshots
If applicable, add screenshots to help explain your problem.

Application / Environment (please complete the following information):

• OS: ChromeOS 97.x (has been happening for at least several versions of 9x.x)
• Kiosk 9.3.0

Additional context
Attached are a set of log files from after a second reboot and black screen. Video showing issue. After clearing cache will load page, reboot, only shows black screen. Hit control-A to bring up login to show that video is still being sent to display.