The category filter won't work in portfolio with pagination

[01Kuzma]

The category filter won't work in portfolio with pagination enabled.
Once you have many posts and use pagination - it simply filters posts from a current pagination page, not from all available posts.
Just add some more posts with different categories (or lower the posts per page) and add pagination:

    <div class="blog-pagination">
    	{% if posts.lastPage > 1 %}
    		<ul class="pagination">
    			{% if posts.currentPage > 1 %}
    				<li><a href="{{ page.baseFileName|page({ (pageParam): (posts.currentPage-1) }) }}">&larr; Prev</a></li>
    			{% endif %}
    
    			{% for page in 1..posts.lastPage %}
    				<li class="{{ posts.currentPage == page ? 'active' : null }}">
    					<a href="{{ page.baseFileName|page({ (pageParam): page }) }}">{{ page }}</a>
    				</li>
    			{% endfor %}
    
    			{% if posts.lastPage > posts.currentPage %}
    				<li><a href="{{ page.baseFileName|page({ (pageParam): (posts.currentPage+1) }) }}">Next &rarr;</a></li>
    			{% endif %}
    		</ul>
    	{% endif %}
    </div>