Pushed a minor fix for this, so categories and tags will be on the same line for mobile
https://github.com/discourse/discourse/commit/1e20bdec577650e77fa3e848e74681e512779789
I think for the next release I’ll rework this in grid… and at that point the inputs will be able to wrap if needed without worrying about the extra left/right margin. I’ll use @supports(grid) so older browsers will fall back to the current flex implementation.