# ERROR PATTERN: Modal Backdrop Without Content
Date: 2025-01-07

## Symptoms
- Dark overlay appears
- Modal content not visible
- Page unresponsive
- Only browser back works

## Diagnosis
```javascript
// Browser console check:
document.querySelector('.modal-backdrop')  // Exists
document.querySelector('.modal.show')      // Missing
```

## Root Causes
1. Z-index conflicts
2. Bootstrap timing issues
3. Missing element on show()
4. CSS overrides

## Standard Fix
See: CRITICAL_INVESTIGATIONS\UI_Architecture\MODAL_OVERLAY_CONFLICTS.md

## Known Occurrences
1. Job_Posting Apply button (confirmed)
2. Potentially 7 other templates with modals