Cursor moves from the 'Replace by' field back to 'Find' on it's own
Not a big deal when you know about it, but confusing before then :)

After opening the Find and Replace dialogue, you tab into the _Replace by_ field and start typing but for some reason, the cursor automatically jumps back into the _Find_ field. If you're not aware of it, you end up typing or pasting your text to _Replace by_ to the end of the _Find_ field. 

Hope the screen recording makes sense.

(This has been happening a while, it's not v66 related, but I only just found the time to annoy you with it :) )

Keep up the amazing work!

![Screen-Recording-2020-05-22-at-0](https://user-images.githubusercontent.com/978182/82646853-340d0d80-9c0d-11ea-9553-f0e816bce864.gif)

