Here’s some really simple code:
{exp:channel:entries category="{segment_3_category_id}”}
{title{language_suffix}}
{/exp:channel:entries}
If the category in segment 3 has an ampersand in it’s name the channel entries tag isn’t listing anything. Just to note the actual url doesn’t have ampersand, just the name of the category.
I’ve tried hardcoding the categoryid with the same result.
Where the category name doesn’t have an ampersand the above code is working fine.