Unless we talk about near zero view counter games, should not the developer know that their game does not run correctly? Like, at all.
If it were a general problem of the published game, I mean.
Viewing post in Trouble playing Godot games in web browser
Things to try.
Start it in a new incognito tab in Chrome.
Make an additional new blank Chrome profile without any extensions.
Deactivate / Activate the hardware accellearation in Chrome.
Try Opera.
Itch changed something with their servers a while back, including stuff that might or might not affect those shared array stuff. I do not know if there are any solutions, but there are threads in forum about this and certain issues.