Today I noticed that in Google Chrome 57.0.2987.133 (64-bit) cosmetic rules (and probably JS rules too) does not work on dropbox.com.
For test purpose I added this rule - dropbox.com##body - so website should be blank, but it does not work.
I observed that in Opera and Firefox it works properly, I only have this problem in Google Chrome.
In console I see these errors:

For test purpose I added this rule - dropbox.com##body - so website should be blank, but it does not work.
I observed that in Opera and Firefox it works properly, I only have this problem in Google Chrome.
In console I see these errors:
