Contribution Graph Tooltip Freezes When Overlapping Calendar Blocks

[harryallenp1]

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Bug

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When hovering over the contribution graph (calendar heatmap) on the GitHub profile page, the tooltip showing the date and contribution count becomes unresponsive when overlapping other calendar blocks. The tooltip doesn’t update unless I move the cursor to a region where the tooltip doesn’t overlap the graph. This causes issues with navigating and understanding contribution dates.

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Steps to Reproduce:
1. Go to your GitHub profile page.
2. Hover your cursor over any of the calendar blocks in the contribution graph.
3. Move the cursor horizontally across the row.
4. If the tooltip overlaps the graph, it gets “stuck” and doesn’t update with new info.

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Environment:
• Browser: Google Chrome Version 135.0.7049.85 (Official Build) (arm64)
• OS: macOS
• Theme: Dark Mode

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Expected behavior:

The tooltip should update its contents dynamically as I move across the blocks, even when overlapping the graph itself.

ErrorVid.1.mp4

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[oliviamais68]

Ran into the same issue while checking commits for our Roblox game Development Studio project makes it tough to track daily progress fast.

[demellab]

I also noticed the same issue while tracking my daily progress. Thanks @harryallenp1 for pointing this out!