DW 2017 - Find and Replace fields now seem to be character limited (BUG)

In case others are coming up against this I just submitted it a bug in DW 2017 (however, I am not altogether sure the submission worked correctly). Mac OS 10.11

Steps to Reproduce Bug:

1.  Cmd F to display Find and Replace dialog.

2.  Select and copy a largish section of text from another doc (such as a Library item) and try to paste into either the Find or Replace field.

Results: 

All you get is a "bonk" error sound as you are not allowed to paste into it.

Expected Results:

As in the previous version before this update, you should be able to paste largish items of text, including Library items, into the Find or Replace fields. A workaround for now, however painful, is to reduce the amount of text you are trying to paste in and do everything one replace at a time...

NB: I am also getting regular crashes doing search and replace and, as others have reported, tags are not auto closed correctly i.e. if you start a "<p>" then it completes as "</". DW 2017 seems to have some serious issues...