Tell us what you are trying to do?
I have some CPT created with Toolset and suddenly it stopped to display break lines or bold texts from the Content Post.
Even if I write <br> or on html it doesn't work correctly.
What editor are you using to edit posts and provide the post content.
How are you outputting that post content? In Toolset templates? Using the block editor and the Single Field block? Using the legacy editor and shortcodes?