A couple of days ago we upgraded to Discourse 3.2 and since then some of our members started experiencing a weird bug and I’m lost at what might be causing this. Sometimes when they leave the forum to our main website and are browsing through it, clicking on links on our main website suddenly sends them to a forum error page saying the (forum) page doesn’t exist. The links they are clicking absolutely do not point to the forum, and yet, they are landing back on the forum. And, oddly, the reports include screenshots where people are clearing seeing our main website but the URL in the browser is still showing them in the forum (sub)domain – as if they were browsing our main website through an iframe of sorts within the forum. If relevant, we use the Custom Header Links (icons) component to add a direct link to our main website which is how people are reaching our main website. [Screenshot 2024-07-05 at 12.02.46] As far as I can see, this generates a regular link. The link opens in the current tab. Discourse runs at a subdomain.example.com and main website is at www.example.com. They run in distinct IP addresses/servers. I have been unable to reproduce this myself, but this is happening to multiple people (and multiple times) since we upgraded a couple of days ago. It does not always happen, but I have not found a common pattern. Any idea what I should be looking into here? Importantly, how can one be browsing a different website while the URL still showing them as if they are still browsing the forum? :exploding_head:

Does this affect all or only certain browsers?

Will confirm, but all reports so far seem to be on mobile, with references to iPhone or iPad (Safari, and “Chrome”).

Have you read this? [image] iOS doesn't load CSS sometimes when navigating between subdomains Bug We have observed some strange issues like this. As far as we can tell, it must be a bug in Safari/WebKit. It should be impossible for this kind of ‘mixed site’ rendering to happen. We have filed a report with WebKit. (cc @pmusaraj) If anyone can find a consistent way to reproduce the issue, that would almost certainly help to get the bug prioritised.

Although not a CSS issue in this case, it does seem related in that two subdomains (the forum and the main www one) seems to be experiencing weird mixed content. Will follow up there - this can be closed.

Link to external site remains in forum context somehow

Product Support

Moin July 5, 2024, 11:54am 4

Have you read this?

Topic		Replies	Views
iOS doesn't load CSS sometimes when navigating between subdomains Bug ios	57	4595	February 6, 2025
Keep old site in place and have old links work within discourse? Product Support	9	520	April 23, 2024
Left-clicking same-domain links to URLs not on the whitelist is broken Feature	7	3257	January 17, 2017
Admin link in subfolder mode is incorrect Bug	12	1637	November 1, 2017
Blank main page on one forum (subfolder + multisite install) Bug	5	1282	February 20, 2020

Link to external site remains in forum context somehow

Related topics