In a wiki where the new dashboard is deployed:

• Go to the dashboard with a large number of available translations so that you can scroll down significantly.
• Scroll down quickly using mouse-wheel or two-fingers.
• Notice that the top bar is re-positioning itself in a jumpy way.

In more detail:

The top bar with "W", personal bar and "Translations" goes away from the screen and it's probably OK, because usual MediaWiki does the same (some day it should become sticky everywhere). The part of the screen with "from any language"/"to any language" and "Create a new translation" keeps itself sticky at the top. This is OK, but while the actual scrolling happens, it's jumpy and not so elegant.

If you scroll down slowly, you'll notice that the gray area with "from any language"/"to any language" can be scrolled out of view for a few pixels before it readjusts itself. It would be better if it would just stop scrolling up when its top border reaches the border of the window and that only the translations list will continue scrolling.