I have a problem after a recent update.
I was aware that recent updates broke my custom template so I have delayed them until this weekend when I set myself the task of fixing the issues.
So, I went from CB 2.0.15 to 2.1.2. I solved my template issues and got an almost identical looking site.
You can see CB in action on the main website www.ncadd.org/about-ncadd/our-affiliates
It is a busy site and CB forms the affiliates and a geo search capability, it all has worked well for many years.
Please go to the site and click on any member. Look at the breadcrumbs, you will see that they are as you would expect, work well and also that the url is reasonably SEO friendly and acceptable. Overall this site showcased CB in an unusual but effective way. The affiliates do update their pages and it serves its purpose.
Now go to the test site which I have left open so you can see it. It is running the modified custom template and CB version 2.1.12 test.ncadd.biz/about-ncadd/our-affiliates
Again please select any user and look at the breadcrumbs, now you see I have an extra level, user, and this not only is distracting but if a visitor clicks it they get the warning message which is quite a distraction.
A big difference between the two sites is how the userprofile menu item is configured. Now I do know that the CB documentation clearly tells me to publish the userprofile menu but in the case of the main site running CB 2.0.15 it is not published and that gives me the neat breadcrumbs and behavior I like. If I publish that menu, then I get the same performance as the test site running the new 2.12 build. Yes, you can just say it is operating as it should, but it makes no sense to me that ordinary visitors must see the user level or get that message.
My question is this, can you help me configure something that helps my situation and lets visitors browse members and get back to the full listing without the member’s level? I see that on your demo site there is no breadcrumbs but the same issue seems to occur, if you were to have them enabled there would be this extra menu option that does not make sense if you are not a member logged into the system.
My best option so far is to leave the userprofile menu unpublished even in the new version, then the breadcrumbs defaults to the main menu level, no distracting user level but the URL is complex and not SEO friendly, also a significant issue for my community, either option will break all the published and searched links that have built up over the years. So I really do need a way of getting the same performance or I am stuck on an old version for life!
There is a chance that I solved this issue by some hack all those years ago, but I normally keep good notes and there is nothing. Please see if you can help.

I have to say that the reply you gave me and the level of respect you assumed for me is one of the main reasons I get a bad feeling whenever I see anything about CB. Surly your humanity would drive you to try and be a bit more helpful and understanding of my problem. perhaps you have so many requests that your main driver is just to get something answered and off your plate.
Your statement that our new code is much better seems unnecessary and presumably designed to be a shield against any minion trying to suggest otherwise, which I was not.
Then to go on and list the sorts of mistakes others may make or you imagine I made is disrespectful. I was careful to ask my question clearly and to say what I was doing. If you had taken the time to actually read and understand my question you would know what I was doing with menu items.
I am sorry to vent but I am really disappointed that your reply was so unhelpful.
As an FYI the current live site does not have /profiles/user, it presumably gets the direction to route from the search menu item and works fine. As I stated, it breaks your mandatory rule to bind the userprofile menu and instead uses the search user menu to route.
Rather than defend your code perhaps the community might benefit from a more open understanding of what people want of the code. In my use case I believe that the menu structure works well and perhaps others would benefit from being able to use breadcrumbs and not suffer the annoying warning whenever a visitor clicks the profiles level.
I can only hope that others in the CB community are more open and helpful.

Thanks for getting back on the case. I have started to look for options, so some more information.

If I use on old URL it still gets resolved by the new router, sort of expected that after looking at the code and the cases for legacy paths. But I did not expect that Joomla would resolve the breadcrumbs correctly. So if I use legacy url's as they will be out there on the net and with customers bookmarks things still work, this is great. But puzzled why Joomla is able to continue to use it and resolve the correct (well the version I want) breadcrumb.

So as an test. Using the old CB build on the current live ncadd site and new CB build on the test site:

[Case 1] The old builds path for a profile would be: /about-ncadd/our-affiliates/userprofile/1022

and the resulting breadcrumbs would be

Home / About NCADD / Our Affiliates / NCADD, Juneau Affiliate

[Case 2] Same test on the new CB build with the test site, the profile path is: /about-ncadd/our-affiliates/profile/1022-ncadd-juneau-affiliate

and the breadcrumbs are:

Home / About NCADD / Our Affiliates / profile / NCADD, Juneau Affiliate

[Case 3] Using the old build url on the new CB build

path used /about-ncadd/our-affiliates/userprofile/1022

and the breadcrumbs are:

Home / About NCADD / Our Affiliates / NCADD, Juneau Affiliate

Conclusion: At least I am able to know that all my web based history of stored links and bookmarks will continue if I go to the new build but puzzled that the bookmarks remains as I want it and not how the new CB version provides.

I tried to see if you build the pathway using $pathway function, becasue that would set the breadcrumbs but it seems you guys do not set this or do any joomla like functions that might affect its view of the path.

In the past I have written hacks to the pathway to correct for menu issues, so I am attempting to add some code to set the pathway for profile views, just having difficulty understanding how you build a profile page.

This is my baseline cheatsheet for that code:
//this returns the pathway object for manipulating
$pathway = JFactory::getApplication()->getPathway();
//append item on the end of the pathway - first argument for the name, the second (optional) for a link
$pathway->addItem('Designers','index.php?Itemid=115');
//append just a name to the pathway
$pathway->addItem('Hello hello');
so my hope is to include in the profile view code some code to get the pathway then manipulate it to remove the /profile

My other option is less liked, I can add some code into the joomla core to match the provided URL and override the profile path removing /profile. Not a nice way to go.

Or I can just stay on the old build for a while. In any event it will be the weekend before I can pick this up again. If you or any of the staff have suggestions, all appreciated.

Could not let this slip out of my mind. A dirty fix does work

I guess for anybody who want's to follow me, there is a quick and effective fix that involves modifying part of Joomla but in a way that might be acceptable.

Assuming you name your mandatory CB profile menu "profile" then this is the breadcrumbs item you want to remove, so create a custom mod_breadcrumbs template file to look for the name profile as it builds the path and either delete it or jump over that item in the list.

I copied the file /modules/mod_breadcrumbs/tmpl/default.php into the templates override folder /templates/your template/html/mod_breadcrumbs/default.php

So now I can have my own version of this that will not get overwritten by core Joomla.

A core version of mod_breadcrumbs seemed to work by replacing line 30 of default.php

if ($i == 1 && !empty($list[$i]->link) && !empty($list[$i - 1]->link) && $list[$i]->link == $list[$i - 1]->link)

to become

if (($i != 1 && !empty($list[$i]->link) && !empty($list[$i - 1]->link)) && ($list[$i]->link == $list[$i - 1]->link || $list[$i]->name == "profile"))

in my case I already had a custom default.php so it was different than core. So I added a line into the loop building the breadcrumb path,

if ( $list[$i]->name == "profile"){$i=$i+1;}

But you have the place to make the change and code for matching the name you just need to figure out how to remove it from the list. Of course if you plan on having menu items called profile you might want to choose a different name for the CD mandatory menu.

It works for me and should be easy to manage.