Have you tried using topic templates to help people with this? Try making a post in this category to see how it works. You could have a template like
<!-- please make your topic title as descriptive as possible. -->
<!-- There's no need to include version numbers though -->
# The issue
<!-- Please describe your issue here. -->
<!-- Surround any code with ``` (three backticks) to format correctly -->
# Version Number
<!-- We need the major and minor version numbers of the framework you're using -->
Note that the <!-- --> won’t be included in the person’s final post, so you can use that for little hints to show while they’re editing.
That doesn’t necesarily help with getting users to use the correct category though…