I'm working on a File that started in FileMaker 9. Currently in FileMaker 15. I added a popover with a global text field to a portal. When I try to enter text into the field it takes a about a second for each character to show.
If I open the File in FileMaker 14, open the popover and enter text into the field there is no delay in having the characters appear.
I'm in the process of doing a full re-write/update to 15, but the client needs a few minor items in the old version "now". As it is, I don't think it is usable in 15.