Earlier quoted context omitted.
ah very sorry about the dialog being too large. Which phone have you used it on? I should really fix this. I've tested on an iphone mini, and even though the dialog is quite big on it, so I should indeed try and shrink it, it doesn't prevent completing the tutorial. But it looks like I wrongly assumed this would be the smallest phone I could test it on. And as far as I know, the empty tiles only gets uncovered if you…
Not the user who made the original report, but I had the same problem. I got stuck on the second mine because the tutorial textbox covered that shape and so I couldn’t flag the mine. iPhone SE, Safari
And if you're able to send a screenshot, that'll be super useful. As at the moment, when testing in chrome dev tools, with iphone SE selected, it looks like it doesn't display the right size of the phone (or maybe I've misconfigured the dev tools), as the dialog box doesn't prevent from completing the tutorial.