It seems like, at some point, your table bugged out with older max width functionality, which has a fail safe checking at update, but it didn’t happened to your table. Can you please use the below custom CSS at your theme to check if this will fix your problem. Sorry for the inconvenience.
Sorry the CSS doesn’t appear to work. Also, upon viewing the inspector, there was a lot more additional CSS being generated which I don’t have control over, including things like the table fading in etc.
Sadly, I have 370 of these similar tables embedded in pop-up as part of custom post type. Must be another solution.