Confirming this is an issue. Reverting to the previous version doesn't help, as that version has a bug where choosing a rune just does nothing at all. Had to go back to 1.6.8 to finally get past it.
If I had to guess, it's an issue with the developer swapping to a new method of choosing a rune (previously, instead of clicking on a symbol it just gave you a list of numbers to choose from). Likely when swapping to this new method, something went wrong when registering which rune was picked /acknowledging that a rune has been picked at all