Seeing a dotted square white border (Universal Focus Rectangle) around desktop icons is not a big thing. But if this occurs often & annoys you, see this post.

A version of Google Maps on its U.S. site shows the Crimean Peninsula with a dotted line instead of an international border.

Depending on the purpose and context of the map they may choose to mark a border with a dashed line or special shading to highlight the contention.