[CompSci87]

Nah  .... Must be an IOS thing.  The +/- boxes aren't rendered in either portrait or landscape mode on my IPhone 6 running IOS 10.3.3.    (Yeah, I haven't updated to 11 yet.)  /Lefty

There are three formats the CardBoard uses, normally depending on your screen width. You can see all three on a desktop machine by making your window narrower and narrower. On Android the "request desktop site" checkbox (somehow) causes the widest layout to be used even on a phone. I don't have an iPhone to test with, but it sounds like somehow that's just not working there.

[CompSci87]

Nah  .... Must be an IOS thing.  The +/- boxes aren't rendered in either portrait or landscape mode on my IPhone 6 running IOS 10.3.3.    (Yeah, I haven't updated to 11 yet.)  /Lefty

There are three formats the CardBoard uses, normally depending on your screen width. You can see all three on a desktop machine by making your window narrower and narrower. On Android the "request desktop site" checkbox (somehow) causes the widest layout to be used even on a phone. I don't have an iPhone to test with, but it sounds like somehow that's just not working there.