Thank you for your post.
I am able to replicate the problem if I just use "Enter Find Mode". However, if I create a script with the following commands:
Enter Find Mode 
Perform Find 
... and then attach this script to the button, this will work properly.
I have forwarded your post along with my findings to our Development and Software Quality Assurance (Testing) departments for review and confirmation. If any additional information becomes available, I will let you know.