UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.117 Safari/537.36

Steps to reproduce the problem:
1. Press Ctrl + F to open the 'Find In Page' dialogue.
2. Type search text into dialogue, the dialogue will update with how many matches it has found in the page. e.g. 1/12
3. Refresh the page
4. Press Ctrl-F again, the dialogue appears, with the previous search text still populated, however no matches are found.
5. Delete a letter from the search text and enter it again
6. 'Find In Page' now shows the correct number of matches.

What is the expected behavior?
When you refresh the page, press Ctrl+F, the dialogue should appear either blank with no matches count, or populated with a count of the matches.

What went wrong?
The 'Find in Page' dialogue appears after a refresh, still populated with the previous search text, however no matches are counted. Simply deleting a letter from the search text will cause the dialogue to work again. This however requires the user to go from keyboard input to mouse and back to keyboard unnecessarily.

Did this work before? No 

Chrome version: 66.0.3359.117  Channel: stable
OS Version: 16.04
Flash Version: 

If there is text in the box then it should automatically perform a search, or delete the text from the box.