"leaving unsettled" is a grammatically correct and commonly used phrase in written English.
It is typically used to describe a situation or problem that has not been resolved or addressed. Example: Despite multiple attempts at negotiation, the two sides remain at an impasse, leaving the issue of border control unsettled.
The justices, however, employed radically different rationales to come to their answer, leaving unsettled the question of how much protection one may expect from the Fourth Amendment in the digital age.
The main parties in Westminster promised more devolution, but this opened the hornets' nest of English nationalism, leaving unsettled the issue of Scotland's relations with the rest of the United Kingdom.
But the Russian defense minister, Sergei B. Ivanov, whose country is one of five on the Security Council with veto power, indicated that his government's first priority was the return of inspectors, leaving unsettled the issue of a new Council resolution.
On a team left unsettled by injuries, Beasley's versatility could be his most valuable asset.
Scores are left unsettled; people move on; institutions start to change.
It was left unsettled because lawyers for the two parties and the minority groups in the lawsuit failed to agree on a new election schedule.
The majority of voters seem content to leave unsettled the question of whether Britain is, or should be, an unambiguously European country.
"With this copy," Katharine told me, "there are often two ways the story could go, and it's left unsettled as to which way D. B. would prefer.
Left unsettled is what advice to give half a million American VW owners still running vehicles that produce emissions that are as much as 40 times over the legal limit.
Officials from the National Hockey League and the United States Olympic Committee spent yesterday offering their blueprints for an ideal drug-testing policy, but emerged with issues that, if left unsettled, could dilute the star power of the United States hockey team.
So, things were left unsettled and there is a core group among the Giants who yearn for the backup Jason Garrett to start because they believe he can unify the offense and team, is more cool under pressure and is a better decision-maker.
