Edit bookmark not showing complete bookmark list on Safari

I need to edit the bookmarks in the bookmark bar so I click Bookmarks, on the Safari menu bar, then Edit Bookmarks, but many of bookmarks don't show!

If you are using MacOS:

You may need to click the > beside folder names to see the bookmarks in each folder

Eg:

Thank you kindly for your reply, and for the added info.

Wondering which Mac model (year) you are using,

and

which MacOS version is installed on your Mac.

Eg: Your software may need updating to the newest compatible MacOS version.

You may want to check if an update is available:

ie: System Settings (or Preferences > General > Software updates

If you decide to update (or upgrade): A friendly reminder: It is always wise to back-up Mac beforehand.

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If Mac is already up-to-date : If you haven't tried it already:

You may want to try restarting your Mac (Apple menu > Restart) (ie: deletes temporary files, re-establishes connections, may update recent setting changes, and often restores order if something is not working as expected.)

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If you have any un-necessary third-party (non-Apple) ad-blockers, virus-checkers, cleaners, and the like (even VPN) installed, they can cause interference; eg: you may want to try turning them off, or use uninstallers from the developers.

Any necessary third-party apps need to be kept up-to-date to side-step issues.

(Eg: Incompatibility with a more recent MacOS can cause unwelcome interference.

Thank you for your reply, illustrating so adroitly the helpful info.! Helps a lot in troubleshooting when there are multiple possibilities for determining the cause of a situation :-)

Wondering if you have any Safari extensions installed:

ie: Safari > System Settings > Extensions.

If so, please try turning them all off ... then check if there is any difference in viewing your list in edit bookmarks. (If problem solved, you may want to try turning the extensions back on, one by one, to isolate the "culprit".)

Thank you for repeating your earlier screenshot.

You may want to contact: Safari - Official Apple Support

or

If you wish, you could just send feedback to Apple. Feedback - Safari - Apple