xdan/jodit 4.12.8 on GitHub

Tooltip / Popup: tooltips and dropdown popups were mis-positioned (offset away from their button) when the editor was placed inside an ancestor with a CSS transform — e.g. a modal/flyout. Both elements use position: fixed, and a transformed ancestor becomes their containing block, so the viewport coordinates were shifted by that ancestor's top-left corner. Added a getFixedPositionOffset helper that returns the containing-block offset ({0, 0} when there is no transformed ancestor, so normal usage is unaffected) and subtracted it when positioning the tooltip and popup. Fixes #1350.