Screen jittering for a second when opening certain posts direct URL

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AI-generated summary

Users Canapin and Moin report a screen jittering issue on mobile (and tablet in desktop mode) when navigating to or returning from certain Discourse posts, particularly noticeable after clicking topic links and going back. The jitter occurs on both Chrome and Firefox, persists in safe mode, and seems tied to specific post content — possibly posts starting with titles or link titles — rather than the yearly review theme itself. Canapin notes the behavior is more visible on back navigation and doesn’t occur when copying post content into a test topic. Moin confirms the issue, mentioning they’ve grown accustomed to these “small earthquakes” and even recorded a screencast on October 6th documenting the behavior. The issue appears to be a UI/UX glitch related to rendering or rehydration of certain post structures on mobile devices.

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Steps to repro (on mobile):

  1. Go to 2024: The Year in Review - #4 by system
  2. Click on a topic link
  3. Go back to the previous page
  4. The screen jitters for a second

Tested on Chrome and Firefox.

It also happens when you directly open such a post, but it’s more visible when going back to a post (probably when it doesn’t refresh/load the whole interface).

I’m not sure why. It also does it on the yearly review of my forum, but when I copy-paste the content of those posts into another test topic, it doesn’t happen.

It’s probably not specific to the yearly review itself but rather some content such as a post starting with a title, or a link title… :thinking:

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I noticed that too on my tablet (Android) where I use desktop mode. It’s easier to notice when I use Firefox, but it also happens in Chrome.

Safe mode but that doesn’t change anything.

I’ve gotten used to these small earthquakes over the past few months. (I have a screencast recorded on October 6th that documents this behavior.)

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