How to report a bug who just happen sometimes ?

Here is the thing :
I found a bug in Blender.
So i go to “Report a Bug”, in “Description” there’s
“Exact steps for others to reproduce the error”, but this bug that i found, just happen sometimes, how i’ll report this bug ?

Exactly the way that you describe here.

"How to reproduce: It happens random. I haven’t found the exact cause yet. "

Maybe you could tell us here too what exactly happens, and describe the situation in which it happens random. That way other people may find out what’s the exact cause.

what OS - video card

upload sample file so other people might try to reproduce it

might help to have a better clearer description how to reproduce it

happy bl