Picture and text jump in slow and getting bigger then on live mobile webseite

On mobile the images and text first go small and then they jump to big, but it should not be like that, see the picture from my site www.elmirarehnert.com: RPReplay_Final1686306458.MP4 - Google Drive

But when I look at it in Webflow in Preview, the problem does not exist and I have no idea what it is, see the recordings from Preview:

Here is my site Read-Only: Webflow - Elmira Rehnert UX Portfolio