Embarked Songhai Worker has Strength of 500

[demeryt]

and my caravel shooting at it would do only 4 damage (part of the screenshot is cut but you can see a green 4).

Incidentally, in the combat box (below [red 0]: Approx DMG Inflicted) the Worker's strength is listed as 5.

I thought embarked units have 0 strength and are automatically destroyed if attacked? Mine certainly do have 0 Strength.

 

[UNIT 666]

Songhai's ability gives embarked units a combat strength. 500 seems a bit high... though.

 

[ainwood]

A save file would help. Thanks!