I’m finding my forum frequently “zooms in” slightly on mobile, leaving buttons slightly truncated.
I can recreate this consistently by tapping the search button (I think it may also be triggered elsewhere too):
Happening to me too on meta and my 2 instances. Been about a week or so.
Was too lazy to report it before. But can confirm it’s an issue
1 Like
Can confirm. Probably because the viewport meta tag got changed from user-scalable=no to user-scalable=yes
I thought it was intended.
4 Likes
I don’t think it’s true, because we have:
https://github.com/discourse/discourse/commit/14eb8eea014e10ec41b8748546231e10a802cc68
or is it not working as penar thought it would?
Need to dig more, but inspecting the DOM with a touch inside an input I get:
<meta name="viewport" content="width=device-width, minimum-scale=1.0, user-scalable=yes, viewport-fit=cover">
So doesn’t look like it’s applying the fix.
2 Likes
So it appears there are multiple cases:
- [
] when you are on the page with no focus and you select the input. - [
] when you focus input after transition. Adding a focus event now correctly set user-scalable=no, but it does still zoom in
5 Likes
From my understanding this is expected. This is exactly what the commit I linked is trying to keep on iOS: do not zoom when focusing input while keeping the possibility to pinch zoom.
4 Likes
Oh, I see. This has been happening only for a couple weeks so it’s definitely new. I’ll try to get used to it for now 
The problem is that the UI becomes horizontally truncated in normal use.
Forum users may not be aware they need to pinch to zoom in order to work around this truncation.
That’s not what I’m saying. I’m saying the ability to pinch zoom is expected, not the zoom in input.
4 Likes
Ah good, okay. Yes, I like having the ability to pinch-to-zoom on forum content
Was digging a bit more and in this PR
https://github.com/discourse/discourse/pull/7347
the viewport meta for mobile devices got changed from
<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
to
<meta name="viewport" content="width=device-width, minimum-scale=1.0, user-scalable=yes, viewport-fit=cover">
So I also think its intended that now everyone can zoom on mobile devices.
3 Likes
This commit should fix the issue with the search input zoom in iOS: https://github.com/discourse/discourse/commit/a452933071b9ad844b02217619aea1a864a02978
The intended behaviour is to enable zooming on touch devices, but iOS automatically zooms on inputs with font size set to less than 16px, which is not a very fun experience, so we’ve implemented a workaround to avoid that auto-zoom.
11 Likes