Tony,
I don't know if this is specific to having OpenRefine hosted on a
VM. Going through the last few months of messages and I found
several other people reporting what seems similar issues:
A couple of questions to help to narrow down this issue:
1. Extra information regarding the browser, OS and version of
OpenRefine is always welcome
2. Did you try to open a particular project using its URL, for
example:
http://127.0.0.1:3333/project?project=1946026776557
where 1946026776557 is the project archive name ; or via the
browser history function? This will help to identify if the issue
if from the front end to list all projects or at the project
storage / saving level.
3. Did this happen on brand new instance of OpenRefine or appear
over time? Does a certain number of project trigger the issue?
This might be a good candidate to report it as an issue via
github.
Martin