Inconsistency in formatting of multiline conditional statements

[adam-fowler]

With respectsExistingLineBreaks set to true

let a = this ||
    that
// after formatting becomes
let a = this || that

and

let a = this
    || that
// after formatting becomes
let a = 
    this
    || that

Why are newlines respected in the second case but not the first

[ahoppen]

Synced to Apple’s issue tracker as rdar://140672947