Fixed Ant Design drawer z-index to allow modal overlays

[gilluminate]

Ticket ENG-1988

Description Of Changes

Set Ant Design Drawer zIndexPopupBase to 1300 to position it below Chakra modal overlays, enabling drawer contents to open modals without z-index conflicts.

Code Changes

• Updated Ant theme configuration to set Drawer zIndexPopupBase to 1300

Steps to Confirm

1. Go to data map report
2. Click system name to open the drawer
3. Expand the Sources accordion in the Data flow section near the bottom of the drawer
4. Click Configure sources button
5. Verify the modal appears above the drawer correctly

Pre-Merge Checklist

• Issue requirements met
• All CI pipelines succeeded
• CHANGELOG.md updated
  • Add a db-migration This indicates that a change includes a database migration label to the entry if your change includes a DB migration
  • Add a high-risk This issue suggests changes that have a high-probability of breaking existing code label to the entry if your change includes a high-risk change (i.e. potential for performance impact or unexpected regression) that should be flagged
  • Updates unreleased work already in Changelog, no new entry necessary
• UX feedback:
  • All UX related changes have been reviewed by a designer
  • No UX review needed
• Followup issues:
  • Followup issues created
  • No followup issues
• Database migrations:
  • Ensure that your downrev is up to date with the latest revision on main
  • Ensure that your downgrade() migration is correct and works
    • If a downgrade migration is not possible for this change, please call this out in the PR description!
  • No migrations
• Documentation:
  • Documentation complete, PR opened in fidesdocs
  • Documentation issue created in fidesdocs
  • If there are any new client scopes created as part of the pull request, remember to update public-facing documentation that references our scope registry
  • No documentation updates required

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Project	Deployment	Preview	Comments	Updated (UTC)
fides-plus-nightly	Ready	Preview	Comment	Nov 17, 2025 9:28pm

1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
fides-privacy-center	Ignored			Nov 17, 2025 9:28pm

[greptile-apps]

Greptile Summary

• Fixed z-index conflict by setting Ant Design Drawer zIndexPopupBase to 1300, positioning it below Chakra modals (1400)
• Updated CHANGELOG.md with entry under Developer Experience section

Confidence Score: 5/5

• This PR is safe to merge with minimal risk.
• The change is a simple, focused z-index adjustment that solves a specific UI layering issue. The fix follows the established z-index hierarchy (Drawer at 1300, Chakra modal at 1400, other Ant popups at 1500), is well-documented with clear inline comments, and only affects the visual stacking order without changing any logic.
• No files require special attention.

[greptile-apps]

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[lucanovera]

Modal correctly appears above drawer. Approved!