Cosmetic rules does not work on dropbox.com

[Adam]

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:

 

[Blaz]

Reproduced, site is not in HTTPS exclusion list and also #$# rules are not working. Very likely due to that policy.

Even when the script for that Content-Security-Policy is removed from the site or the meta, it refuses to load the adguard script.

 

[avatar]

Yep, that is caused by the CSP header for sure. AG should've added `local.adguard.com` to the list of trusted sources, but it seems that it failed to parse this CSP header value.

Filed a bug report:
https://github.com/AdguardTeam/AdguardForWindows/issues/1678