:auto connection not downgraded on initial ws connection failure

We have a failure mode in dev/qa environments with a misconfigured reverse proxy between client and server that doesn't understand or abide by the initial websocket connection attempt and responds with 200 instead of 100. Sente continues to try to reconnect the websocket and never seems to failover to the ajax connection. I would have expected it to fail over. It looks like the auto->ajax downgrade watch is looking for never-opened websocket connection with a :last-error in the state map (https://github.com/ptaoussanis/sente/blob/master/src/taoensso/sente.cljc#L1347), but it doesn't look like anywhere else in the code is setting :last-error. There are a number of references to :last-ws-error and that is in the state map in this case. Is that what the downgrade watch should be looking at, or is it not expected to failover to the ajax connection in this failure mode?

taoensso / sente

:auto connection not downgraded on initial ws connection failure #326