[tomtomtom777]

It seems correct to me.

The map shows the country "United Kingdom of Great Britain and Northern Ireland" (UK) without separating its constituent countries. This is what most political world maps do.

Ireland does border by land to the UK, at the border of Northern Ireland. This is shown with the black line.

Also it borders to the UK and all of the world's ocean bordering countries which is shown through the surrounding blue.

[mannykannot]

It is a little inconsistent in that it shows the Bosporus dividing Turkey and even the Suez Canal dividing Egypt, but not the Irish Sea dividing the UK - though the first two are nominally continental boundaries.