No seriously, this is a completely broken UX. Let me show it step by step.
I browse to a sub-category I want to post in.
I click the new topic → new question button.
I write my question and click the button to submit:
It prompts me to enter a version tag. This appears to be impossible. The placement of the error message seems to also say it should be put in the title field. Or the category field.
Trying to enter the version doesn’t work:
This is not a matter of explaining the “correct” way to get around this in this thread. This is a fundamentally broken user experience.