CONTAP-53314: Tx total errors count of an interface group port in "ifstat" output might not correlate with respective counts of member ports

Issue

Output of ifstat in section TRANSMIT indicates increasing Total Errors for interface group, but not for its underlying physical member ports.
Example:
    RECEIVE
    Total frames:    72688k | Frames/second:     266  | Total bytes:       207g
    Bytes/second:      760k | Total errors:        0  | Errors/minute:       0
    [...]
    TRANSMIT
    Total frames:      397m | Frames/second:   55169  | Total bytes:       512g
    Bytes/second:    71122k | Total errors:     2720  | Errors/minute:      23  

Note: Total errors on TRANSMIT increased

EMS finds ifgrp interface generate alert vifmgr.cluscheck.crcerrors.
  nodename::*> event log show -message-name vifmgr.cluscheck.crcerrors
  Time                Node             Severity      Event
  ------------------- ---------------- ------------- ---------------------------
  4/22/2021 00:42:39  nodename
                                     ALERT         vifmgr.cluscheck.crcerrors: Port a0a on nodename
                                     is reporting a high number of observed hardware errors, possibly CRC errors.

or
  ALERT  vifmgr.cluscheck.hwerrors: Port a1a on node ***** is reporting a high number (at least 1 per 1000 packets) of observed　hardware errors (CRC, length, alignment, dropped).