to reproduce:

1. go the the java edition project description (might also work with other projects, but I haven't tested that)
2. click the little gear icon beneath the dscription (see image)
3. notice the bottom edge of a dropdown menu appears, but that the rest of it is rendered behind the text of the description.

disabling the "bottom:18px" of ".footer .aui-dd-parent .aui-dropdown" appears to fix the issue (dropdown menu is rendered below the gear icon instead of above), but there are still some styling issues with the shadow and when hovering over it.