Saved content contains HTML code, which causes layui to render abnormally

User feedback came up with a problem, page data. Originally 10, there will be 2 more, and the page is strange. As shown in the figure below

, after investigation, it was found that the HTML code was stored in one of the fields, causing layui to render it and the original style was destroyed.

Content data:

It is normal to delete this content. In order to avoid this situation from happening again, it is generally necessary to perform content verification on the front end, or store and transcode