Marvel Multiverse by Roll20 crashes web browser

What it says on the tin; attempting to select the Marvel multiverse rule set in game settings caused my browser to freeze up and crash.  Got an entire page of "undefined" over and over again, and then the browser ate enough memory until it killed itself.

Hi Mako,  Which browser are you using? 

Current Browser: Firefox Version 125.0.2 (64-bit)

Hi Mako, I was able to observe what you reported, except it did not cause a crash for me. I suggest filing a bug report with the Devs via the Help Center  so that they can track this issue.   If they ask for more information please tell them to see my report via Slack.  Note: Chrome had less system resources used when testing this issue. You might have success going to the Campaign Details (Game Settings) page in Chrome without it crashing. 

Will-do; and thanks for the responses and help.