Popup & nested template CSS file missing after activating Combine CSS Files

There is a major issue after I SG Optimizer was updated to version 5.5.0.

All nested template css files on pages are missing, they are not included in the new combined css file and can’t be found in excluded list of the SG Optimizer option.

I checked waterfall chart on GTMetrix and found these missing files are all like this:

“https://www.mywebsitename.com/wp-content/uploads/elementor/css/post-28854.css”, “https://www.mywebsitename.com/wp-content/uploads/elementor/css/post-15245.css” …

After investigating my website, I found these templates are:

1. Elementor Popup templates, I use a button to trigger it by click using using Elementor dynamic content;
2. JetPopup(a plugin from Crocoblck) templates, I use a button to trigger it by click using JetPopup option in Elementor edit column;
3. Templates nested in other Elementor widgets: for example an Elementor section nested in dropbar widget(a widget of JetEelments plugin from Crocoblock), an Elementor section nested in Tabs widget(a widget of JetTabs plugin from Crocoblock), an Elementor section nested in Advanced Tabs widget(a widget from Powerpack Elements plugin);
4. JetEngine Listing template, then I use Listing Grid widget(a popular widget of JetEngine plugin from Crocoblock) to create grid or list layout of Posts/Terms;

There is no such issue before I updated SG Optimizer to version 5.5.0. Now I have to turn off “Combine CSS Files” option, please help.