UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36

Steps to reproduce the problem:
1. Create a simple input like this <input type="file" accept="text/html"/> in say jsfiddle.
2. Click on the input button. It takes about >10s to open the file dialog. (Regardless of the number of files in the opening directory)

What is the expected behavior?
1. Create a simple input like this without accept attribute. <input type="file"/>
2. Click on the input button again (opening the same directory). It opens instantly.

What went wrong?
Input file dialog opens slowly

Did this work before? Yes Version 61.0.3147.0 works (Canary). Haven't tried previous versions yet, pretty sure worked before

Does this work in other browsers? Yes

Chrome version: 59.0.3071.115  Channel: stable
OS Version: OS X 10.12.5
Flash Version: Shockwave Flash 26.0 r0