Comment by awkward
Github's code review tool is uniquely bad. Notably it presents every comment as blocking and requiring sign off - even a "Glad someone cleaned this up! <thumbs up emoji>" needs clearing before merge.
It also has some UX snafus that cause reviewers to write a number of comments and then forget to publish any of them, leading to a lot of interactions along the lines of "I thought you were going to review my PR?" "I already did?"
Requiring every comment to be resolved is not a standard part of GitHub’s code review system. That is something which your organization has gone out of its way to require.