Fill and Sign Not Working on Reader Version 19.010.20099

Hello, I am getting this when I try to use Fill and Sign on Reader 19.010.20099:

There's no where to add a signature, just a blank grey box. This was working on my machine with version 19.010.20098, but since the update it has stopped working. This is on Windows 10. Has anyone else had this issue and is there a fix for this? Thanks.