Cursor position is incorrect after deleting image in Firefox

Phenomenon

When deleting an image from a contenteditable element in Firefox, the cursor position after deletion is incorrect or unexpected. The cursor may end up in the wrong location or become invalid.

Reproduction example

1. Insert an image into contenteditable
2. Place cursor after the image
3. Press Backspace to delete the image

Observed behavior

• Image is deleted
• Cursor position is incorrect or lost
• Cursor may end up before the image position
• Or cursor may become invalid

Expected behavior

• Cursor should be in correct position after deletion
• Cursor should be where the image was
• Cursor should remain valid
• User should be able to continue typing

Browser Comparison

• Chrome/Edge: Cursor position generally correct
• Firefox: Cursor position incorrect (this case)
• Safari: Cursor position most unpredictable

Notes and possible direction for workarounds

• Intercept image deletion
• Manually set cursor position after deletion
• Use Range API to position cursor correctly
• Restore selection after DOM manipulation