Hey echo_suemiza@163.com, thanks for flagging this, and sorry you’re running into it. Sounds like a bug if the chart color-scheme keeps snapping back to monochrome-4 even after AI edits or manual changes.

Quick couple questions so we can pass something actionable to the team:

1) What chart type is it (bar/line/pie/etc), and does it happen on every chart or only certain ones?

2) When it resets, is it immediate after you change it, or only after something like refresh/reopen/export?

If you’re up for it, a screenshot of the chart settings panel right after you change color-scheme (and then after it resets) would help a ton.