I’ve got a really simple C++ 20 struct with a constexpr ctor. Compiles and runs fine with GCC recent versions, but not MSVC 2022 with latest patches. Is the MSVC compiler incorrect, or have I missed something?

#include <stdint.h>
/// Info from GPS, assembled from multiple NMEA sentences into coherent summary
/// WGS84, NED...
struct GPSinfo_T {
    /// Status bit masks
    enum StatusFlagsT {
        NFG = 0,
        time_OK = 1, ///< time and date populated
        navigation_OK = 2, ///< RMC field 14 Positioning status is S=Safe (not C=Caution, U=Unsafe, or V=Positioning status not valid)
        HPR_OK = 4, ///< ???
    };
    uint8_t statusBitmap; ///< StatusFlagsT above defines bits
    bool TimeIsOK() const { return (statusBitmap&time_OK) != 0; };
    bool NavigatingOK() const { return (statusBitmap&navigation_OK) != 0; }; // RMC field 14 == 'S' Safe
    bool HPRisOK() const { return HPR_QF=='4' || HPR_QF=='5'; }; // ToDo GPS: use bit in statusBitmap, now set...
    /// What constellations were used in this fix (from GNS sentence)?
    /// One character status for each of these constellations:
    /// - First character is for GPS.
    /// - Second character is for GLONASS.
    /// - Third character is Galileo.
    /// - Fourth character is for BeiDou.
    /// - Fifth character is for QZSS.
    /// - Sixth is terminating 0.
    /// We need 'A' autonomous, especially not 'E' estimated or 'N' none...
    char fixSources[6];
    /// 'Quality of Fix' from HPR sentence
    char HPR_QF;
    /// 'Position Status' from RMC
    char RMC_PS;
    uint32_t satellitesUsed;
    double hdop;
    /// Time
    uint32_t UTC_time_hundredths; // hundredths of seconds since UTC midnight
    uint32_t dateDDMMYY; // in ddmmyy, not decoded into anything useful like Unix time_t
    /// Position angles in degrees, North and East are positive.
    double latitude, longitude;
    double altitude; // meters
    /// Track (from RMC, calculated as difference between fixes)
    double track_TrueHeading, track_MPS;
    /// Heading and Pitch from HPR sentence (calculated using 2 antennas)
    double HPR_heading, HPR_pitch;
    constexpr GPSinfo_T():
        statusBitmap(NFG), fixSources("NNNNN"), HPR_QF(' '), RMC_PS(' '), satellitesUsed(0), hdop(9999.0),
        UTC_time_hundredths(0), dateDDMMYY(0),
        latitude(0.0), longitude(0.0), altitude(0.0),
        track_TrueHeading(0.0), track_MPS(0.0), HPR_heading(0.0), HPR_pitch(0.0)
        {};
};