Describe the bug
When you're either on a narrow phone or are just in a magazine with a long name, the /m/some-magazine-name is getting squashed and the site start scrolling horizontally. When you're scrolling down and have the static header activated it also hides half the bar.

On which Mbin instance did you find the bug?
[gehirneimer.de]

Which Mbin version was running on the instance?
[1.8.2, but latest main]

To Reproduce
Steps to reproduce the behavior:

1. Take a phone
2. Open a magazine with a longer name
3. See a weirdly squashed header

(you can also reproduce it on a desktop browser with phone emulation)

Expected behavior
The magazine name should be cut off when it is overflowing

Screenshots
If applicable, add screenshots to help explain your problem.

Additional context
This was introduced in #1671
I already tried implementing it, but I failed as the header is put together via a flexbox nested in a grid.