Load several rooms

Using XrSceneModel from the OpenXr Samples, I can see it loads only one room when I have several rooms scanned.

xrQuerySpacesFB triggers XR_TYPE_EVENT_DATA_SPACE_QUERY_RESULTS_AVAILABLE_FB and XR_TYPE_EVENT_DATA_SPACE_SET_STATUS_COMPLETE_FB correctly but only returns one room. I can force the query again but it only returns the same room. And if I force the query again with excludeFilter set with the uuid of the first room, nothing is returned aferwards.

OpenXR Mobile SDK v66 still uses OpenXR version 1.0.34, and it says in the download page that in the upcoming versions (>= 1.0.38, but it doesn't work if I try to get this or newer versions) xrQuerySpacesFB will be able to receive multiple rooms. However I don't understand why if I force the query two times, with the second one with an uuid exclude filter, I can't retrieve two stored rooms.