Markdown Feature not working properly

[TasmiaZerin1128]

Hello all, I have upgraded Superset to 6.1.0, and was starting to create dashboards. While adding markdown, found that it is not working properly. The cursor gets misplaced and editing also not working correctly. For a better understanding, I've attached a screen recording. How can I get this fixed?

dashboard-markdown.mp4

[dosubot[bot]]

Hi @TasmiaZerin1128! I'm Dosu and I'm helping the Apache Superset team.

This cursor misplacement issue in the Markdown editor was a known bug that was fixed in April 2026. The root cause was a font-family mismatch between the Ace editor's internal measurements and the actual rendered text, which caused the cursor to appear in the wrong position [1].

Since you're on Superset 6.1.0, you may be on a version that predates this fix. Here's what I'd suggest:

1. Check if your version includes the fix — The fix added explicit font-family styling to .ace_content and .ace_text-layer in the Ace editor used by the Markdown component. If you're not seeing this fix in your deployment, you may need to upgrade to a newer patch release.

2. As a workaround, if upgrading isn't immediately possible, you could try adding custom CSS to ensure the Ace editor's font-family is consistent (e.g., setting monospace on the .ace_content and .ace_text-layer elements).

There was also a related cursor position clearing fix merged in March 2026 [2] that addressed selection/cursor issues after programmatic cursor movement.

Could you confirm what exact version/commit of 6.1.0 you're running? That would help determine whether these fixes are included in your build.

To reply, just mention @dosu.

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