Hi,
no I haven’t solved the problem, because I can’t really fetch the problem at all. I only know you can’t measure it with PSI, webpagetest.org and gtmetrix because the layout shift happens to late for this tools at 160055 ms (https://imgur.com/a/U8T9Lpp) thats out of the timepanel of that tools. But you see it in ChromeDevTools and the Chrome Extensions for Web Vitals (https://imgur.com/a/P9TkuoO).
It is connected to that frame: https://imgur.com/a/JLLFGO7 and to that task: https://imgur.com/a/vnfFrep. And it only appears when you click at the first time on a link of my blog, if you refresh the already loaded page the CLS is gone.
In Chrome DevTools I have measured it as follows:
Open: https://bzvqew.myraidbox.de/gruene-tomaten-nachreifen
Open DevTools in Chrome Browser
Throttle Speed in Network down to: 50 kb/s download, 13 kb/s upload and 75 ms latency
Go to performance tab
click on the featured image in the small screen you see on your right to start the loading of new page
click quickly to recording the load and wait
The result is always the same: Layout Shift at about 160062 ms. The weird thing is that the score of the layout shift is always different, but always the cause is found in the header-grid-container. Why?
Greetings Kathrin