Expand editor button on open puts the cursor at beginning of text; should be placed at the end

[Peyton-Spencer]

[Peyton-Spencer]

@claude when we open the expanded editor, the cursor should have been placed at the end.

In the screenshot attached in this issue, for example, typing cursor should be placed at the end of 'Thus I conclude that'

Instead, the cursor was placed before 'ok migrating' which is incredibly counterintuitive.

This is desktop btw. Please fix this behavior, thanks in advance

[claude]

Claude finished @Peyton-Spencer's task —— View job • claude/issue-538-20250713_211540 • Create PR ➔

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Cursor positioning fix completed! ✅

Fixed the cursor positioning in the expanded editor so it places the cursor at the end of the text instead of the beginning.

Todo List:

• Analyze codebase to find the expanded editor component
• Locate cursor positioning logic when editor opens
• Implement fix to place cursor at end of text
• Run linting and formatting commands (skipped - dependencies not available)
• Commit and push changes
• Provide PR creation link

Changes Made

• Modified ComposeModal.tsx (lines 70-74) to add cursor positioning logic
• After focusing the textarea, the code now gets the text length and uses setSelectionRange() to position the cursor at the end
• This provides a much more intuitive user experience when opening the expanded editor

Implementation Details

The fix adds these lines after the focus() call:

// Place cursor at the end of the text
if (textAreaRef.current) {
  const textLength = textAreaRef.current.value.length
  textAreaRef.current.setSelectionRange(textLength, textLength)
}

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