UBB.threads PHP Forum Software Community Forums Resources and Customizing How Do I? Copy and Paste Issue

I can type text into a new post, preview it, save it, and it displays correctly.

I can do a cut and paste from a document into a new post, preview it (looks fine) and save it with no errors.

But, the text will not display in the save post.

However, if I attach files, the files are displayed.

??????

BTW, this is 7.5.7