Issue Summary

The Burndown chart uses "Inc" and "Dec" as table headers and the additional information is available only on hover.

Steps to Reproduce

1. Open the Jira Cloud home page.
2. Navigate to the Sidebar, expand "Spaces", and open any space.
3. Navigate and activate "Report" button from the tabs.
4. Navigate and activate "More reports" button.
5. Navigate and activate "Burndown chart" link form the modal dialog.
6. Using the keyboard, try to navigate to the mentioned element.
7. Observe that the content is not available on focus.

Screen Recording

https://www.loom.com/share/515e2368d19a408e8539459f67e0a2aa

Actual Results

The full descriptive terms ("Increase" and "Decrease") are trapped behind a hover-only trigger on the abbreviated words "Inc" and "Dec". Users on non-pointer or touch devices cannot view or access this contextual explanation.

Expected Results

All column header information should be perceivable and available by default across all input modalities:

• Remove the abbreviations "Inc" and "Dec".
• Display the full terms "Increase" and "Decrease" directly as static text in the table header.
• Eliminate the dependency on hover-triggered tooltips for core column descriptions.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available

Environment

MacBook Pro (16-inch, 2023)
macOs - Sequoia 15.7.9
Chrome - Version 154.0.8037.58 (Official Build) (arm64)
Safari- Version 27.0 (20625.1.29.18.28)
JAWS- Version 2026
NVDA- Version 2026.1
Voiceover - Version Latest