Issue with Topic Titles Overlapping Header in Horizon Theme (Mobile Category Page Style)

Bug
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Hello,
I’m using the Horizon theme for my Discourse forum and have encountered an issue. When the Mobile category page style is set to boxes with featured topics, a layout problem arises on the homepage.

Here are the details of the issue:

  • On the homepage, the category buttons and tag selection buttons are displayed correctly at the top of the page.

  • Below them, the categories and some topics are shown, as expected.

  • However, when scrolling the page up, I expect the content to appear below the fixed header, but the topic titles do not behave as expected.

  • Instead, the topic titles appear underneath the fixed header (sticky header), while the category buttons and tag buttons are correctly positioned below the header.

  • This issue only occurs with the Horizon theme and does not appear with other themes.

Additional Information:

  • I’m using the latest version of Discourse.

  • The Horizon theme was downloaded from the official repository and has not been edited.

  • No specific plugins that could interfere with mobile styling are active.

  • This issue occurs only on mobile devices and has been observed in both Chrome and Edge browsers.

Has anyone else experienced this issue, or does anyone have suggestions for a fix? Thank you for your time!

1 Like
2

Are they newly updated iOS mobile devices? This is probably why: iOS 26 bugs with fixed position elements in Discourse

3

Actually, this issue hasn’t occurred on iOS devices in my case—it’s happening on Android, specifically in mobile browsers like Chrome and Edge.

1 Like
4

I can repro, thanks for the report. Will fix

4 Likes
6

Fixed in

3 Likes
7

Thanks so much for the quick fix

1 Like