Thanks and also Im sorry you ran into trouble! I've updated the game so that the second void flower, the vein tube, and even speed runner sam for the comment below no longer require the yes/no dialogue option.
And that also blows my theory that the yes/no bug was a mac-only issue; Im absolutely tearing my hair out trying to figure out why it's happening lol. Thank you for your report!
(The hat one tho is the first Ive heard of it, unfortunately. The best I can currently offer is trying again on a fresh game, if you feel up for it.)