If you create a post using 5 tags, users will not be able to see the post when they browse the 4 secondary tags. It will only show up in the new/hot/trending category of the main tag. If you create it using 4 tags though, then it will show up when users browse the primary tag as well as the 3 secondary tags.
Example 1 (OK):
- Tags: glitch steem steemit news
- Users will see the post when browsing the glitch, steem, steemit, and news tags.
Example 2 (Not OK):
- Tags: glitch steem steemit news issue
- Users will only see the post when browsing the glitch tag.
- Users will not see the post when browsing the steem, steemit, news, and issue tags
Here is the GitHub issue to track the issue/fix: