Because the Roth IRA contribution was a contribution for 2022, the only type of distribution that was permitted to be made from your Roth IRA with respect to this distribution is an ordinary distribution which would be eligible for rollover should you choose to do so (assuming that it would not result in a violation of the one-rollover-per-12-months limitation). However, it's also possible that Vanguard has processed a return of contribution before the due date of the corresponding tax return, which would only be permissible if what they were returning was a separate Roth IRA contribution made for 2024 or 2025, in which case the distribution would not be eligible for rollover (but would leave open the possibility to make a new contribution for that year). Vanguard reps have been known to confuse returns of contributions after the due date of a tax return with returns of contributions before the due date of the tax return.
To be sure what sort of distribution you received, you'll need to ask Vanguard.
There should be no delay in you receiving the check. Only the issuance of the Form 1099-R is delayed until January 2026.
