From a TestFlight user feedback:
The layout of the post is broken, with the images no longer visible.
Edit the post on WPiOS;
Can we expand a bit on what/how exactly gets edited? Thanks!
Just open the post and save. The images are still visible, but the captions on each image get split into a different li element and rendered as blank gallery images with a caption
@diegoreymendez has anything landed recently that could cause this?
Nothing that I am aware of.
I'm trying to reproduce the issue without success.
What version of WPiOS and Gutenberg are you using? @loremattei @koke
I'm on WPiOS 11.1, Gutenberg web v4.1.1 (.com atomic site)
I did notice two interesting details, that might (or might not) be related.
The first one, just by creating and publishing the gallery, I see this behavior on web (without intervention from the mobile app):

https://etoledomatomicsite01.blog/2018/10/29/gallery/
The second one is more interesting, and related to Aztec. When I edit adding a paragraph after the gallery, it adds it as another gallery block:

And back to the web side, it's not recognized:

Make sure at least one of the images has a caption set
Thank you @koke !
That triggered some more weird behavior that is definitely breaking Gutenberg web. But still I don't see the images disappearing.
I also tested with other themes, thinking that it might be related to themes too, but no luck there either.
This is what I see:
Just after publishing from Gutenberg web

After saving from WPiOS:

Also tested adding caption to all the images:

For now I will investigate this one. If it's not exactly the same issue, at least it seems to be related. (There's something wrong saving galleries).
That matches what I saw, I didn't have any missing images
This is very close to the behaviour I got while trying to reproduce the issue, with the difference that, for some reasons, the gallery size in my test didn't grew, so I started with 4 images and then I had only the first two, because the other two slots were used by the captions.
I didn't look at the code, so I don't know what happened exactly. I'll try to redo it again, since I messed up the test post while looking at other reports.
Anyway, this is the original message:
If you use Gutenberg as the Editor and you use the Wordpress own Galleries, WP4iOS destroys them. E.g. You get insted of the 4 pictures, you need the place for 8, behause the Titel/Caption standa besite the pictures.
so I think that the reported issue is the one @etoledom is reproducing.