When this component is enabled (at least I thought it is this component, but it happens also when I choose ‘Default’ here at meta Topic titles and excerpts appear in different font sizes on my tablet. When the sidebar is collapsed while refreshing or when there is a search term in the search banner, the font is smaller.
),
As you can see, at first all tabs look alike, but after a refresh with the sidebar being collapsed or after searching for something, the sizes are different.
Edit: I can also reproduce in safe-mode:
I can also reproduce this at try.discourse.org in safe-mode. However, I still cannot reproduce it on my test forum without full width component. 
