This reduced landscape view issue in Facebook after an iPadOS update is a known compatibility problem where Facebook's app layout doesn't properly adapt to iPadOS 26's new display handling. Here are steps to resolve it:
1. Force quit and restart Facebook:
- Swipe up from the bottom to open the app switcher
- Swipe away the Facebook card
- Reopen Facebook
2. Clear Facebook app cache:
- Go to Settings > General > iPad Storage
- Find Facebook and tap on it
- Tap "Offload App" (this clears cache without deleting data)
- Reinstall Facebook from the App Store
3. Check Facebook Display Zoom settings:
- iPadOS has a Display Zoom feature that can affect app rendering
- Go to Settings > Display & Brightness > Display Zoom
- Switch between Default and More Space and see if it resolves the layout
4. Reset Home Screen Layout:
- Go to Settings > General > Transfer or Reset iPad > Reset > Reset Home Screen Layout
- This can sometimes fix display rendering issues for apps
5. Wait for Facebook update:
- Since this started after an iPadOS update, it's likely a Facebook app compatibility issue
- Check the App Store for any pending Facebook updates
- If no update is available, report the issue via Facebook app: Settings > Help > Report a Problem
This type of layout issue (letterboxing in landscape) usually resolves within a few days to weeks as app developers push compatibility updates following major iPadOS releases.