A site header issue occurs when resizing the window. Don reported the problem, providing screenshots and a video to demonstrate the issue, which is likely related to a recent commit. The error appears on the popup search width when resizing the window under 1100px and then back over 1100px. Ahmed_Gagan was able to reproduce the issue on meta but not on their local setup. The Discourse team, including joffreyjaffeux and kris.kotlarek, identified the issue and developed a fix, which is available in pull request #19232.
Hello,
When I resize the site i get some errors.
The error is visually appears on the popup search width (less wide than normal).
Probably related with this recent commit: FEATURE: sidebar for narrow desktop screen (#19160) · discourse/discourse@5b6604f · GitHub
Repro:
Thank you 
I can reproduce this on meta, but the same doesn’t happens on my local. In my local I am on latest main branch DEV: removes select-kit deprecation (#19200) · discourse/discourse@b032115 · GitHub
Thanks for the report, we have identified the issue and will try to come up with the fix this week.
Thank you @Don for reporting this issue. It should be already fixed 
