Disk Utility volume info, Bootable = No (really?)

[GrampaJiiji]

On a two month old iMac18,3 Retina 5K, 27" 2017, 3.4 GHz, 16GB RAM, 500GB APPLE SSD.
I have cloned the iMac onto a Samsung 500GB SSD T5 using Carbon Copy Cloner.
The cloned drive shows up in System Preferences and can be selected and ‘restart’ boots from it.
The drive also shows up and is bootable using Startup Manager.
However, selecting the volume in Disk Utility info, it lists the volume as Bootable= No.
I was puzzling over it and checked the iMac disk in System Preferences info too......It's also listed as Bootable= No!!!!
Everything is running fine so I guess I should follow the old adage, "If it's not bust, don't fix it!"
I just hope nothing untoward will occur down the road.

 

[treekram]

I guess "Bootable" in Disk Utility now only applies to HFS+ disks as my APFS disks, containers and volumes all show "Bootable" being No, but my High Sierra bootable HDD's (HFS+) show "Bootable" being Yes.

 

[GrampaJiiji]

I guess "Bootable" in Disk Utility now only applies to HFS+ disks as my APFS disks, containers and volumes all show "Bootable" being No, but my High Sierra bootable HDD's (HFS+) show "Bootable" being Yes.

Thank you for your input treecram.
After posting here I also sent a heads up about it to Mike Bombich's Carbon Copy Cloner, the opinion seems to be that Apple's Disk Utility has become progressively less useful with each OS update.
Thanks again treecram, I'm glad to know that I'm not alone. (I'm way too old to go back to troubleshooting system bugs.)