Hi, @themodactyl.

Here is the screenshot.
It does not matter what kind of code is used, even if you use lets say Ads Inserter plugin, once Adsense is inserted into between paragraphs, or into bbpress topic page, or anything inside normal page text, it will stretch primary div into full width of the screen and will push down sidebar under primary div.

I am saying this all the time, but seems no one understands me.
It is not about the code I, or anyone else use to inject ads, but about flex styling.

For example, if I use width: 600px !important, than, the advertisement will not push sidebar to a new row, under the primary div. but than that is not any responsive advertisement and looks bad on mobile, or if you make it good on mobile, it will look too small on desktop.
We need some javascript or jQuery that will prohibit adsense ads do this with flex css.

You can acomplish the same with child theme and using this:
– Put your single post template to have sidebar, add any widget in sidebar.
Use this in functions:

add_filter( 'the_content', 'post_ads_1_paragraph' );
 
function post_ads_1_paragraph( $content ) {
    $ad_code = '<div class="advertparagraph">

<blockquote>PUT ADSENSE CODE IN HERE OR ADROTATE SHORTCODE.</blockquote>

</div>';
 
    if ( is_single() && ! is_admin() ) {
        return prefix_insert_after_1nd_paragraph( $ad_code, 1, $content );
    }
     
    return $content;
}
  
function prefix_insert_after_1nd_paragraph( $insertion, $paragraph_id, $content ) {
    $closing_p = '</p>';
    $paragraphs = explode( $closing_p, $content );
    foreach ($paragraphs as $index => $paragraph) {
 
        if ( trim( $paragraph ) ) {
            $paragraphs[$index] .= $closing_p;
        }
 
        if ( $paragraph_id == $index + 1 ) {
            $paragraphs[$index] .= $insertion;
        }
    }
     
    return implode( '', $paragraphs );
}

The code will inject ad after first paragraph.
Than clear the cache, and you will see ad is pushing sidebar under the primary div.

Capture-1

This is not about BuddyPress, BBpress, it is also the problem of the single posts, single pages too.
Any adsense on single posts, single pages will push sidebar in the new row, because responsive adsense ad is able to push flex box to full width of the screen.
The problem is called flex in the theme.

It is about the theme, because it was styled by FLEX.
I asked the same question for bbpress, but until today, I did not realized it was the same problem, now I am.

Yeah, the theme is built by flex css, and you need to provide fix for responsive ads inside your theme for your customers, or apply the fix to theme update on the primary div, as the most of the people use adsense code.

I am not the only one, many people asked the same, but they did not realized they have problem with the way of theme styling, and they are trying to change php functions instead:
https://support.themosaurus.com/forums/search/adsense/

I have put adsense under div class advertbbpress, as it is advertisement for forum. CSS of this advertisement is:

.advertbbpress {
    display: block;
    width: 100%;
    min-width: 250px;
    margin: 50px 0 0 0 !important;
}

I am using adrotate, and I am calling the code after first post via this function…

function display_after_topic() {
    if( get_post_type() == 'topic') {
    $text = '<div class="advertbbpress">' . adrotate_ad(4) . '</div>';
    echo $text;
    }
    else {
    return ;
    }
}

It shows advertisement after the first topic.

Althought I am asking this about forum, same is happening also in posts, pages and everywhere. The way theme is developed, somehow google ads are pushing the parent divs to full width, and everything after is going in a new row. Check here: https://mllapan.com/forum/tema/moj-pc-se-ne-moze-nositi-s-uredjivanjem-video-zapisa/

Note: The ad is under the word “Hvala!” as it sometime does not show.

I know it can be fixed by adding fixed width to advertbbpress class, but than on different screens ad will overflow things, or I would have a lot of css to do for all the screens.