I think form detection has to do with how the source PDF is saved, such as if the PDF is flattened. Also, this feature doesn't work with some other formats, lik

I think form detection has to do with how the source PDF is saved, such as if the PDF is flattened. Also, this feature doesn't work with some other formats, like JPEGs. If it's not working, there is a text box tool in the markup toolbar.