[Bug] Stacked bar chart: items stay faded after hover

[corasla]

Version

6.0.0, 5.6.0, 5.4.3

Link to Minimal Reproduction

https://codepen.io/corasla/pen/gbPLgWg

Steps to Reproduce

1. Open the stacked bar chart in the reproduction link.

2. Hover over individual items in the stacked bars.

3. Observe that:

• Similar items are highlighted as expected.
• Some hovered items become semi-transparent after hover ends and never return to full opacity.

Current Behavior

• After hovering out, some of the previously hovered items remain gray/transparent.
• This effect accumulates as you hover more items.
• Only a full page refresh resets their appearance

Expected Behavior

• While hovering: similar items should be highlighted, non-similar items should be faded.
• After hovering ends: all items should restore their original color and opacity (100%).

Environment

- OS: macOS, Windows 11 (also reproducible on others)
- Browser: Chrome (latest, reproducible across versions)
- Framework: independent of framework (tested standalone and with frameworks)

Any additional comments?

• This issue occurs with larger datasets (see reproduction).
• With small datasets, the problem does not appear.

[corasla]

[helgasoft]

yes, with so many bars (around 5000) there will be a problem with dynamic focus/blur.
Consider changing series emphasis from focus:"series" to disabled:true.