html share problem with zoom level

hey!

here in my website i try to implement three different maps in three wordpress "tabs".:

https://waldsamkeit.de/treffpunkte-fuehrungen-berlin/

unfortunately, just the first map is in the right zoom level, the others are like "the whole world map"...

The weird thing is: this also happens, when i put excactly the same html code in every one of the three "tabs" , f.e this code:

<iframe width="425" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="https://www.openstreetmap.org/export/embed.html?bbox=13.691408336162569%2C52.51934645959183%2C13.69588762521744%2C52.52078758624266&amp;layer=mapnik&amp;marker=52.52006702882641%2C13.693647980690002" style="border: 1px solid black"></iframe>

Größere Karte anzeigen

anybody any ideas?

ps: i use Wp rocket "caching plug", but i excluded this subpage, so this shouldnt be a problem.

Thanks and greetings!!

Josy