You can actually set the settingsButtonStyle's and fullscreenButtonStyle's overflow parameter to hidden as a temporary workaround so that the scrollbars at the bottom would disappear.
Also did you notice a few more customization options were added to the Comments Plugin?
settingsButtonStyle, fullscreenButtonStyle were added a while back, submitButtonSuccessText, hideSettingsButton, hideFullscreenButton were quite new I think.
Yeah, I could see the overflow issue spreading across many generator pages, even into the plugin page itself. I think the Dev should apply the possible fix that would get applied across generator pages.
This issue did not appear on Firefox though upon checking.
Pinging dev @perchance@lemmy.world