Misleading formatted indentation in nested if-statements when using ? :

Consider the following Xtend class after formatting: (branches are labelled based on ? and :. Code has been formatted)

@Data class Foo {
	val Collection<Object> open
	val Collection<Object> closed
	val Object[][] area
	private def checkNode(Object curr, int x, int y) {
		area.get(x, y) => [
			closed.contains(it)
				? !open.contains(it) // If-1
				? { // If-2
				setData(curr)
				open.add(it)
			} : checkBetter(curr) // Else-A
				? { // If-3
				open.add(it)
			}
		]
	}
	def setData(Object a, Object b) {/*Irrelevant*/}
	def checkBetter(Object a, Object b) {/*Irrelevant*/}
}

The branch labelled Else-A belongs to If-2, although based on the indentation it seems as if it belonged to If-1.
The content of the whole If-2-Else-A block (including the block If-3) is missing a level of indentation.
In case it matters, the line width is 110 and indentation uses tabs.

Start with the provided formatted Xtend example and trace the formatter behavior for nested if-statements using the ? and : branches. Verify that Else-A belongs to If-2 and that the If-2–Else-A block is indented consistently; done means the formatted output makes both relationships clear.