Hi Travis,
We resolved the issue by changing the host_regex expression from ondemand-poc-node-.* to ondemand-poc-node-.*?. Adding the “?” to the end of the regex turned out to be the key.
We got the idea from this issue by @link89 and the pull request therein.
The change did resolve issues with jupyter and RStudio that looked very different from each other.
We believe this might be worth adding to the documentation for other users who encounter the same problem.