How this instance of bug was achieved: I was writing the comment on the Youtube. I've made an error in "Autumn" word. Just after I wrote this word I pressed right mouse button and I've corrected it (2nd choice from list). Next word I've mistaken was a bit later - consciousness. This time I've got in list propositions to fix both already fixed Autumn word and consciousness. It's like previous list of propositions wasn't cleared.
Instance which happened right now: https://i.imgur.com/mKtO3Hl.png - I've made a spelling mistake again.
1) First one was the word consciousness, which I marked red, above this section - right click, choose proposition
2) Then I was writing "Dictionaries" with spelling mistake (marked green, section "Basic info") - right click gave me propositions for consciousness and Dictionaries
3) When I was writing word writing, misspell as "writting", I've got propositions for consciousness and writing
So it seems proposition list gives me first word I'm fixing and the current word.