Yeah, it's intended. Check the Medicine Ufopaedia page, it's been updated to address this.
Also, new version is well on its way. Meridian recently added a very cool battlescape function that lets you M-click on enemies to see their picture and weapons:
However, most units didn't have inventory pictures (which are used for this display), and now I'm cranking them out like crazy. Therefore, everything else is frozen. But I have most early enemies covered already, so it shouldn't be long before update (though I won't have pics for everything yet, this is impossible).