I hope you are well today and thank you for your question.
I have tested it on my test site and it’s working fine for me using the latest version of the Jevelin theme.
Please make sure that you are using the below latest version of the theme.
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This can be due to plugin conflict on your site so please try temporarily deactivating all plugins except Redux framework, Elementor, and WpBakery page builder plugins and see whether everything works fine and then enable the plugins one by one to see which plugin is conflicting if any.
Also, please try using a different browser.
You can download the above-shared theme zip file and install it on your website as described below.