Page Titles have aligned to center, why? was aligned left

I have had some weird things happening when I’m editing pages, like it won’t save properly and the next time I go in it will say there’s a more recent version in the autosave,

So I had that happen and when I refreshed the page all the Page Titles had mysteriously centered. Any ideas why? I don’t want to mess with the code am wondering if there’s a page title alignment function that might have changed.

Thanks
Steph