Trouble with columns

This widget does exactly what I want it to do when it comes to displaying full content of blog posts, but unfortunately it is messing up my columns in the process. I am yet to figure out a way to resolve the issue.

I am dividing my page into a 1/4 column and a 3/4 column. I wish to use this widget on the 1/4 column portion of my page. When I include the Ultimate Posts Widget on my page, any additional content posted below the widget “escapes” the 1/4 column formatting (when I look at the code associated with the webpage, it appears that the additional content becomes “stuck” in between the 1/4 column and the 3/4 column).

I am new to WordPress and do not have a technical background. I can manipulate only the most basic of coding but do not want to do so without very specific instructions from someone who knows what they’re doing.

Additional Background:

1) I am dividing my page into a 1/4 column and a 3/4 column using the shortcodes below:

[swm_one_fourth first] Add Content Here [/swm_one_fourth]

[swm_three_fourth] Add Content Here [/swm_three_fourth]

2) I am using “Ultimate Posts Widget” in conjunction with “Widgetize Pages Widget” (which allows me to add custom sidebars anywhere in a page). I am doing this so that I can show the full content of a blog post within a secondary (custom) sidebar on my homepage.

3) Through trial-and-error testing, I have confirmed that my columns are being messed up by the Ultimate Posts Widget and not the Widgetize Pages Widget. (The columns are only affected when I include Ultimate Posts Widget.)

I hope someone can help me with this. Except for the issue I’m having with my columns, the Ultimate Post Widget is absolutely perfect for my needs!

https://wordpress.org/plugins/ultimate-posts-widget/