<!--- Provide a general summary of the issue in the title above. -->

## Description
<!--- Provide a more detailed introduction to the issue itself. -->
<!--- Why you consider it to be a bug or a useful change/improvement? -->

## Expected Behaviour
<!--- If you're describing a bug, tell us what should happen. -->
<!--- If you're suggesting a change/improvement, tell us how it should work. -->

## Current Behaviour
<!--- If describing a bug, tell us what happens instead of the expected behavior. -->
<!--- If suggesting a change/improvement, explain the difference from current behavior. -->

## Possible Solution
<!--- Not obligatory, but suggest a fix/reason for the bug, -->
<!--- or ideas how to implement the addition or change. -->

## Steps to Reproduce (for bugs)
<!--- Provide a link to a live example, or an unambiguous set of steps to reproduce this bug. -->
1. create a fresh Firefox profile
2. 
3. 
4. 

## Context
<!--- How has this issue affected you? What are you trying to accomplish? -->
<!--- Did you reproduce the problem with a fresh Firefox profile? -->
<!--- Providing context helps us come up with a solution that is most useful in the real world. -->

## Your Environment
<!--- Include as many relevant details about the environment you experienced the bug in. -->
* CanvasBlocker Version used:
* Firefox version incl. 32- or 64-bit:
* Operating System and version (desktop or mobile):
* Installed addons:

## Your Settings
~~~ json
<!--- Copy your CanvasBlocker settings here. -->
<!-- They can be retrieved by checking the expert mode and going to export settings. -->
<!--- You may consider deleting personal data - especially the "persistentRndStorage". -->
~~~