The upgrade to VarRegions has taken effect with surprisingly few issues given it replaces not one but two prior options. Some minor glitches affecting the map have been identified and will be fixed shortly.
More gnarly issues involve a new version of scripting command llCastRay (sometimes used in weapons) and loss of the hypergrid suitcase from inventory when jumping to a grid running an earlier version of OpenSim (sometimes rectified by clearing cache).
Problems with Firestorm chat command ‘gth’ appear to be in the viewer’s support for VarRegions so not Kitely’s call. However, Oren suggested a workround: “Open the World Map. Just doing that, even once, fixes the viewer’s understanding of the region, and from then on ‘gth’ works correctly.”