Solved: wixWindow.postmessage suddenly dead on mobile

As we all know, there are 2 postMessage methods in Velo (iframe and window). I have been using wixWindow.postMessage for ages to send info to the frontend client to inform it about query start-end. wixWindow.postMessage, by default, posts to Parent. This has been working ever since. Until recently: it still works on desktop browsers, but, alas, on Mobile it is working no more, this is a dead window, it is pushing up the daisies.
I have been trying this on Chrome, Edge and Opera, all dead. But…, they all are Chromium based. So my question is: is this a Velo thing or a Chromium novelty?

Any serious answer would be highly appreciated, kind of stuck.

Turned out not to be the wixWindow.postmessage. In some magical way, the container holding the animation, which is switched on/off by postMessage, was moved to the very bottom of the mobile page. So it was displayed, but way outside the viewport. Dragged it to its original position and all was fine.

Yep, probably always a good idea to check the Mobile view has not moved things around in unexpected way, when doing edits on the Desktop. 9 x out of ten it has done something like that…