I have created a view that shows photos from each product I setup. But it will not show the alt tag that is loaded in with the photo. I'm using this code: [types field='photos' size='medium' align='none' resize='pad' index="0" alt='%%ALT%%'][/types]
Link to a page where the issue can be seen: hidden link
You can see the alt tag is showing up blank on all the images even though they all have them set in the Media Manager.
I observed the problem on your site and did some quick testing but couldn't identify the cause. It appears to be a live site so I have taken a copy to install locally for further testing and will get back to you later.
I did some further testing but wasn't able to determine the cause, and it is not something I can reproduce on a test site, it seems to be an exception affecting only your site.
I have escalated this thread so that it can be investigated further, and I'll update you when there is some news.
We haven't been able to identify the cause of the issue. We can't reproduce it with a similar set up, it only appears to affect the images on your site.
What we did find with your own site is that with a minimal set up—switching theme to twentyseventeen and disabling non-Toolset plugins—new images uploaded to new posts worked as expected, the alt attributes are output.
I then re-enabled your theme and your plugins one-by-one trying to identify if a conflict was responsible for the issue, but for newly uploaded images they continued to work fine.
But the old images do not. Examining the database we cannot see what the difference is between the old and new images that might account for it. At some point something was affecting the images as they were uploaded, but we don't know what.
Could you please verify that for new images uploaded the alt tags appear.
I tried running the regenerate thumbnails plugin on my copy of your site hoping that might fix the images but it didn't, and for now I don't see any alternative to manually replacing them.
Another colleague took a look and found that the guid column in the wp_posts table contains URLs that point to a different location than the current site URL.
It looks like you migrated the site and whatever tool you used didn't do a proper search and replace on the URLs.
When making copies of sites we use Duplicator or All in One WP Migration, both of which handle this automatically.
