On 10k reputation you get inline tag edit possibility. But this edits are rejected on switching to full edit mode. E.g.:
Before inline tag edit there are tags: bug comment voting:
In inline tag edit mode I added feature-request and removed comments, and decided to continue with full edit mode by tapping on "edit" link:
After that all tags were rolled back to post origin state:
I know this's minor, but can we revert made edits only on cancellation, but not on the switching from inline tag edit mode to full edit mode?