@AvrgUser: To troubleshoot the issue, please press the Volume Down and Power buttons together for around 10 seconds until the phone restarts. Don't worry, this won't affect your personal data or settings. Following the restart, head to Settings > Apps > Facebook > Force Stop > Storage > Clear Cache. Do the same for any other affected apps, and let me know if this helps.
I'm not sure what could be causing the stretching effect you're experiencing when scrolling through websites. Is this occurring on specific sites, or is the issue persistent across all sites you visit? Have you tried using an alternate internet browser to see if this helps?