Problems with the UI

I’m linking to a screenshot, because my issue is with the backend wp-admin page. All other screens look normal, but when I try to manage comics in comic easle, the columns of the UI are one character wide making it almost impossible to use.

If I use the Chrome inspector to alter the CSS I can fix it, but it seems like the errors are in the wp-admin CSS, which seems odd.

I tried deleting and reinstalling the plugin to no effect. I don’t know how my wp-admin CSS could have been altered, or how to “reset” it.

The page I need help with: [log in to see the link]