Editing and bug issues with adobe acrobat reader dc

Hi i dont really know how to explain what is happening, i will attach a photo. 

I was able to edit my invite as normal but then all of a sudden when i got back into it and clicked on it to edit it some more it did this. 

Everything turns black the writing is un readable, i can still edit it but I cant see what i am writing. 

I can still save my invite and it looks like it normally should. I have attached a copy of what the invite is meant to look like also.

I have deleted and reinstalled the program twice, i have made sure its the latest version. I have restarted my computer. I have redownloaded my template and uploaded it to adobe again. 

Please help!!!!

Thanks