Guest mode is not logging guests out of Netflix on check out date

We have three Roku devices for rooms in our Airbnb and I have enabled Guest Mode for each of them.

We came back to our cottage this weekend and on two of the Rokus it asked me confirm my departure date (perfect - I assumed that meant the guest had been logged out correctly) but when I opened up Netflix after confirming my departure date, it was still logged into our previous Guest’s Netflix account.

I thought the whole point of Guest Mode was to stop this from happening? Has anyone seen this before or have a resolution?

I couldn’t find any other threads or support articles anywhere for this.

Thank you!