Mac Mini 2018 Kernel panic bug_type 210 after Security Update 2020-002

Since installing the Mojave Security Update 2020-002 I do get a message that my Mac Mini 2018 was restarted because of a problem even I shut it down normally. The Mac Mini 2018 was running fine for 3 months. The Apple Hardware Check does not show any errors. Also tried to reset SMC and PRAM.

Is this a known bug? Just curios wether Mac mini 2018 users who also installed Apple's Security Update 2020-002 do see the same error message?

November 15th, 2020: I am pleased to confirm that BridgeOS firmware version 18.16.12561 fixes the Kernel panic bug_type 210 on a Mac mini 2018. Take a look at my answer.

October 19th, 2020: Apple released Security Update 2020-005 and macOS Supplemental Update. The bug has STILL NOT been fixed on macOS Mojave 10.4.6. On cold reboot "Your system was restarted because of a problem" message still shows up. I

July 16th, 2020: Apple released Security Update 2020-004. The bug has STILL NOT been fixed on macOS Mojave 10.4.6. On cold reboot "Your system was restarted because of a problem" message still shows up. No status update on Apple Bug Report. I am kind of surprise on how Apple seems to ignore Mac mini users. They messed up the T2 chip BridgeOS and simply don't care. I guess this bug will never be fixed. Users should rather invest in a new Mac mini model with their latests Apple processor. I am not willing to spent more money on any Mac mini.

Update May 28, 2020: Apple released Security Update 2020-003. However the bug has NOT been fixed on macOS Mojave 10.4.6. On cold reboot "Your system was restarted because of a problem" message still shows up. No status update on Apple Bug Report. Mac Mini users do not seem be relevant for Apple. Such a disappointment.

Update April 24, 2020: Workaround: Do not use Safari until Apple fixes the bug. Also make sure to set the default browser to Firefox, Chrome, Brave... which prevents opening Safari by accident. The shutdown message no longer shows upon a cold boot.

Update April 11, 2020: I did some further testing regarding my initial issue. I have restored from a previous system backup using SuperDuper. This backup clone does NOT include the Security Update 2020-002 Mojave and Safari 13.1. Surprisingly the shutdown message still shows up sporadically when I power on the Mac mini. I have completely shut down my Mac mini 2018 around 10 times. I have waited 5-10 minutes. 4 of 10 times the crash report showed up. It's really difficult to debug. What's interesting is the macOS Mojave Software Update does not show the Security Update 2020-002. So it seems to be already applied. I guess it is definitely related to the T2 BridgeOS Update or other firmware settings which have been patched during the Security Update 2020-002. Restoring from a 4 weeks old system backup does not resolved my issue.

This is a really bummer. I wish Apple would spend more time on testing. So far I haven't heard back from my Apple Bug Report #FB7646566.

Update April 2, 2020: I did a clean install macOS Mojave 10.14.6 without the Security Update 2020-002. As soon as I install the Security Update 2020-002 the annoying crash report shows up when the Mac mini has been shut down.

The Diagnostic Report reads as follows: {"caused_by":"bridgeos","macos_system_state":"shutdown","bug_type":"210","os_version":"Bridge OS 4.4 (17P4263)","timestamp":"2020-03-28 22:10:39.00 +0000","incident_id":"907CAD79-9364-4588-A25A-3810D0E72F8F"} { "build" : "Bridge OS 4.4 (17P4263)", "product" : "iBridge2,5", "kernel" : "Darwin Kernel Version 19.4.0: Mon Mar 2 20:38:56 PST 2020; root:xnu-6153.101.6~2/RELEASE_ARM64_T8010", "incident" : "907CAD79-9364-4588-A25A-3810D0E72F8F", "crashReporterKey" : "c0dec0dec0dec0dec0dec0dec0dec0dec0de0001"

I can confirm similar issues post Security Update 2020-002 on a 2018 Mac Mini runnign 10.14.6.

• A few days later I power it down. On restart refuses to boot normally, taken to Internet restore, which ends in Error -1008F.
• After clearing NVRAM it boots normally.
• Left to sleep overnight
• In the morning, it had shutdown and on starting up normally I received an ‘Unexpected Shutdown message, the crash log showed a panic with iBridge.

Reported to Apple with Feedback Assistant

Update: Security Update 2020-003 has updated Bridge OS so hopefully fixes the issue....

I also have this after every reboot/restart after running the 2020-002 security update on my Mac Mini 2018. Odd thing is, I first ran the update on a Mac OS that was booted from my external SSD (which I occasionally boot from for music production) and after I did this I also got the error after booting from my internal SSD, which had not yet been updated. So I don't know what this install did to the T2 chip but it's apparently regardless of wether you're running on internal or external SSD, and it seems to have affected the hardware rather than the Mac OS installation.

Same here in the Netherlands with my Mac Mini 2018 since the Security Update 2020-002 (Mojave). The Security Update results in the Crash reports: {"caused_by":"bridgeos","macos_system_state":"shutdown","bug_type":"210","os_version":"Bridge OS 4.4 (17P4263)"

After a reinstall of Mojave 10.14.6 from a bootable USB and applying the Security Update 2020-002 the crash reports changed a little in: {"caused_by":"unknown","macos_system_state":"running","bug_type":"210","os_version":"Bridge OS 4.4 (17P4263)"

The Mac Mini is stable and does all daily tasks during working from home in this COVID-19 time. I have completed an Apple feedback report and wait for any solution...