Text not centered on Android

[dabu]

I have a background image with 50vh on Mobile, and a text layer on top, which is vertically centerd.
It looks great, but only on some Android phones with Chrome, the text isn't centered, its placed on the top. If I reload the page, its correct. Could that be a bug in the theme? Or do I need to change something? Thanks for your help!

Screenshot 1: text is wrong (too high)
Screenshot 2: text is correct, if I reload the page
Screenshot 3: view of the page in the backend

[arminunruh]

can u post the link here

this link doesnt work
http://wp23.coraliespatig.ch

or send it to me info@laytheme.com and also send a link to this topic

[dabu]

Thanks for your reply! You can find it here: https://coraliespatig.ch/startseite-test/

It happens on Android with Chrome. iPhone/Safari is fine.