https://en.wikipedia.org/wiki/Scotland#/media/File:Scotland_in_the_UK_and_Europe.svg renders the description as:
Location of .mw-parser-output .nobold{font-weight:normal}Scotland (dark green) – in Europe (green & dark grey) – in the United Kingdom (green)
… instead of "Location of Scotland (dark green) – in Europe (green & dark grey) – in the United Kingdom (green)". The extra spaces and class are generated from https://en.wikipedia.org/wiki/Template:Infobox_country_UK as:
map_caption = {{{map_caption|{{map caption |location_color=dark green|country={{nobold|{{{common_name|{{PAGENAME}}}}}}} |subregion=the [[United Kingdom]] |subregion_color=green |region=Europe|region_color=dark grey}}}}}
… and these are leaking out.