Steps to reproduce

1. Open WikiEditor (2010)
2. Turn highlighting on
3. Write a two or more line paragraph
4. Place a cursor in the middle of the paragraph
5. Press Home or End key

1. Open WikiEditor (2010)
2. Turn highlighting off
3. Write a two or more line paragraph
4. Place a cursor in the middle of the paragraph
5. Press Home or End key

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Expected behavior
With or without highlighting I would expect the same behavior.

Current behavior
In MediaWiki-extensions-CodeMirror Home and End keys move the cursor at the beginning/end of the whole paragraph. In plain WikiEditor (2010) Home and End keys move the cursor at the beginning/end of the current line