The forum's message windows are displaying too narrow on some PCs, potentially due to mobile-optimized pages. Users noted that the "Change Width" button is ineffective, and while some can view the content normally, others experience issues unless in full-screen mode. A key observation is that a "110%" zoom factor may cause display problems, with a suggestion to reset zoom to 100% for better results. Additionally, inconsistencies in CSS settings may contribute to the issue, with an update planned for December to address it. Overall, users are encouraged to adjust their browser settings to improve the viewing experience.