Yes, it should be Q, even if the distribution included RMD shortfalls for some prior years before they decided to code Q in the first place.
I think the coder mistook this for a TIRA account. What is in Box 2a, and for the other part of Box 7 (IRA Type), no box should be checked for a Roth IRA. Checking the IRA box would confirm they mistook the IRA type. Try to get them to issue a corrected 1099R, but they may issue one combined 1099R that would replace both of the 1099R forms you have now.
If they refuse, the IRS may bill you for tax due because of this incorrect 1099R. If you want to preempt that you could file your own substitute 1099R with Form 4852.