Post template breaks after render

Hi,
I’m using Tag Groups Pro. I want to set up custom template for posts list. My code in Tag Groups settings for post template looks like this:

<div class="home-news-box-container"> 
    <a href="{permalink}"> 
        <div class="home-news-box"> 
            <div class="news-box-img" style="background-image: url('{image_src|400x400}')"> 
                <div class="background-opacity"></div> 
            </div> 
            <div class="news-box-content"> 
                <span class="tag">{post_category}</span> 
                <div class="author"> 
                    <div class="author-image"></div> 
                    <span>{post_author}</span> 
                </div> 
                <h2>{post_title}</h2> 
                <p>{post_excerpt}</p> 
            </div> 
            <div class="date-comments"><span>{post_date}</span></div> 
        </div> 
    </a> 
</div>

But when the site renders it returns this structure wrongly:

<div class="home-news-box-container">
    <a >
        </a><div class="home-news-box"><a >
            <div class="news-box-img" style="background-image: url('https://my-site.com/wp-content/uploads/test-image.jpg')">
                <div class="background-opacity"></div>
            </div>
            </a><div class="news-box-content"><a >
                <span class="tag"></span></a><a >Test category</a>
                <div class="author">
                    <div class="author-image"></div>
                    <span>Author name</span>
                </div>
                <h2>Test post</h2>
                <p>This is test post with test excerpt [...]</p>
            </div>
            <div class="date-comments"><span>18 september 2023</span></div>
        </div>
    
</div>

The <a> tag gets closed in the same line where it starts and closing tag that should be on the second-last line disappears. Also, random <a> tag with permalink gets added in the middle of the template where it should not exist. What is the cause of this behaviour and how can I fix it?