If you're sure it's a bug;
- See if there is an existing issue on GitHub and raise one if not. (Note that the issue you are looking for may have been closed).
Please provide a repeatable test case, if you can. Of course, sometimes you can't as the bug may be intermittent, but providing a test case will go a long way to getting the issue resolved quickly.
If you're not sure it's a bug:
Search the forum - it may already have been discussed or raised.
If there are no existing discussions then start a new topic, and if you can categorise it as
help that would be good too! Community members can then take a look and will Help or direct you as appropriate.