Element Picker Mode Button Hidden by website

[wakkabakkamakka]

Website hides the Element-Picker-Mode button.

mega.nz

### Steps for anyone to reproduce the issue

Go to mega.nz
Click the ublock origin symbol.
See the disappeared element picker button.

Your settings

• Browser/version: firefox 47.0 x64
• uBlock Origin version: 1.7.0

Your filter lists

standard

Your custom filters (if any)

no relevant ones

[wakkabakkamakka]

Sorry i just realised right now that i forgot to mention that i installed the MEGA extension. (which is necessary to download large files)

Without the MEGA-extension the issue does not occur.

[gorhill]

MEGA-extension

Link?

[wakkabakkamakka]

mega:///#firefox

[gorhill]

I was asking for a link to the MEGA extension on Mozilla's site, but anyways your response has the answer: cosmetic filtering is not enabled for anything else than http/https protocols. This makes the issue here a duplicate of #1601.