I am trying to validate a JSONPath node value with a regex, but the regex is never saved with the assertion. See attached image.
Using version 6.10.0 build 20190514-29
I confirm that it seems to be a bug. This has been reported to developers. If you have a commercial license i would suggest you to open a support ticket so a hot fix can be provided to solve that issue.
In any case it will be fixed in the next NeoLoad version.
This still seems to be a bug in version 7.0.2 build 20190924-58
Actually, it seems the regex is saved, but if you edit the validation, the stored regex is not displayed. Confirmed by executing the request and seeing that the validation executes as expected.