- Select image node at https://www.mediawiki.org/wiki/VisualEditor/Basic_example_worksheet#Media_files
- Resize an image
- While a new thumb is generated and fetched from Commons, highlight a different image.
Observe, after the thumbnail fetch has completed the dimmed pixelated thumbnail preview will be replaced with a sharp opaque rendering. Unexpected is that this new rendering results in the appearance of a new resize handle at its bottom right corner.
This new highlight and resize handle aren't supposed to exist and aren't properly kept up to date either (when reflowing the document they mostly stay behind and only update during more general regenerations).