Pasting markdown/code inserts React NodeViews that mount asynchronously; until
the next reflow the browser's hit-test geometry is stale, so ProseMirror's
posAtCoords/caretRangeFromPoint maps a click to the wrong (offset) line — which
users reported clears itself on any scroll. Reproduce that scroll's side effect
with a ZERO-delta nudge (re-assign scrollTop/scrollLeft to their current value)
on every scrollable ancestor + the document scrolling element, run across two
animation frames so it lands after the pasted content + NodeViews commit. The
nudge does not move the viewport.
Wired into editor-paste-handler's handlePaste, which ProseMirror's someProp runs
(as an editorProps handler) before the MarkdownClipboard plugin that performs the
markdown/code insert — so the nudge is scheduled on exactly the paste path that
triggers the bug. Complements the structural NodeViewContent-order fix in this
branch.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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