Form answers don't show up until clicked on

Good morning to you all!

I don't know if there is any post talking about this but well, I explain my case, hope it's useful to more people as well.

I want to automatize the filling of an official document in PDF form so I created a Power Automate flow to fill it from a Microsoft Forms. I know the flow is well created and that it works with another documents so the problem is with the document. The thing is that the spaces get filled with the answers correctly but the answers aren't shown until I click on them. 

I tried to save it again in PDF with the printing option, changing the version of the document.... Nothing worked.

Did this ever happened to any of you?

Thanks in advance!!