Created redmine issue https://projects.theforeman.org/issues/29018 from this bug
It's fixed in Foreman 1.22-stable and probably just needs a cherry pick to downstream. It seem that this commit fixed it: https://github.com/theforeman/foreman/commit/c5bcd42965c6a85ca7edb5127da45dbd1740cfe0
Actually, that commit seems to be cherry picked to downstream, I will look more into it soon.
Moving this bug to POST for triage into Satellite 6 since the upstream issue https://projects.theforeman.org/issues/29018 has been resolved.
Verified on Satellite 6.8 snap 2.1 All mentioned disabled buttons are not clickable as expected. I wasn't able to find any disabled button in whole UI that will still work.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Important: Satellite 6.8 release), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2020:4366
*** Bug 1806467 has been marked as a duplicate of this bug. ***