Document Library Web Part Not Republishing Correctly

Hi there! I'm building out a new Sharepoint (communication) site. I've used several document library web parts across multiple pages and noticed today that all the titles of the web parts point back to the main document library it pulls from. When I try to edit the titles, I'll retype the title to what it should say and I'll even try adjusting the # of items to view in the web part (hitting apply). But when I republish the page, it reverts back to titling the web part as the main document library it pulls from and reverts back to the original # of items to view. 

Is this a known bug that Microsoft is aware of? Again, I've built out the site, made no edits to the settings or anything on the back end, and had zero issues with this until today. I'm not sure why there's this glitch happening but if anyone knows how to fix it or if this is something Microsoft is working on, that'd be great to know! We launch the site VERY soon!