Found in version 12.1.5 and still in 12.1.6.
in <SEPM>\Inetpub\Reporting\Dashboard\securitystatus.php
line 961 (12.1.5) or 975 (12.1.6)
replace "majar_version" with "major_version" in
$ips_ood_flag = isIPSSigOutOfDate($zeile["VERSION"],$tooOldSig,$agentCreationTime,$fw_onoff,$cids_onoff,$majar_version,$minor_version);
result:
$ips_ood_flag = isIPSSigOutOfDate($zeile["VERSION"],$tooOldSig,$agentCreationTime,$fw_onoff,$cids_onoff,$major_version,$minor_version);