When I then encountered one of the other walls which teaches one of the other two words to the shout it tought me the third word rather than the second (though after learning it no word showed up in the shout menu beyond the first).
Visiting the third wall in the series results in there being no word there to read - the sound effects play but nothing happens in visual or in gameplay terms beyond this. This leaves me stuck at 'level 1' on the shout, locked out of way to further progress it. I have tried a variety of earlier saves but the problem persists whichever of the two walls I visit and in whatever order. While I can revert to a save before encountering either the second or third walls, reverting to a save before reading the wall at Autumn watch tower isn't an option for me as it was 30+ hours of gameplay ago.
Has anyone got a work-around for this or is just a case of waiting for the patch or using my earlier save and avoiding these walls until after the patch?
