Chrome Version: 65.0.3325.162 (Official Build) (64-bit)
OS: macOS Sierra 10.12.6

What steps will reproduce the problem?
(1) Unzip and load attached extension
(2) Visit http://example.com/

What is the expected result?

The background page prints:

  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/

What happens instead?

The background page prints:

  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/
  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/
  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/

If you go to some other page, for example https://manishjethani.com/ (or any one that doesn't contain "example" in the URL), it'll print:

  webNavigation.onCommitted (1) for https://manishjethani.com/
  webNavigation.onCommitted (2) for https://manishjethani.com/
  webNavigation.onCommitted (1) for https://manishjethani.com/
  webNavigation.onCommitted (2) for https://manishjethani.com/

For chrome://extensions/ it only prints:

  webNavigation.onCommitted (1) for chrome://extensions/

It seems the number of times each webNavigation.onCommitted is called is equivalent to the number of unique filters that are hit.
 

Deleted: example.zip 655 bytes

example.zip 655 bytes Download

Chrome Version: 65.0.3325.162 (Official Build) (64-bit)
OS: macOS Sierra 10.12.6

What steps will reproduce the problem?
(1) Unzip and load attached extension
(2) Visit http://example.com/

What is the expected result?

The background page prints:

  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/

What happens instead?

The background page prints:

  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/
  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/
  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/

Please use labels and text to provide additional information.

If you go to some other page, for example https://manishjethani.com/ (or any one that doesn't contain "example" in the URL), it'll print:

  webNavigation.onCommitted (1) for https://manishjethani.com/
  webNavigation.onCommitted (2) for https://manishjethani.com/
  webNavigation.onCommitted (1) for https://manishjethani.com/
  webNavigation.onCommitted (2) for https://manishjethani.com/

For chrome://extensions/ it only prints:

  webNavigation.onCommitted (1) for chrome://extensions/

It seems the number of times each webNavigation.onCommitted is called is equivalent to the number of unique filters that are hit.
 

Deleted: example.zip 655 bytes

example.zip 655 bytes Download

Chrome Version: 65.0.3325.162 (Official Build) (64-bit)
OS: macOS Sierra 10.12.6

What steps will reproduce the problem?
(1) Unzip and load attached extension
(2) Visit http://example.com/

What is the expected result?

The background page prints:

  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/

What happens instead?

The background page prints:

  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/
  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/
  webNavigation.onCommitted (1) for http://example.com/
  webNavigation.onCommitted (2) for http://example.com/
  webNavigation.onCommitted (3) for http://example.com/

If you go to some other page, for example https://manishjethani.com/ (or any one that doesn't contain "example" in the URL), it'll print:

  webNavigation.onCommitted (1) for https://manishjethani.com/
  webNavigation.onCommitted (2) for https://manishjethani.com/
  webNavigation.onCommitted (1) for https://manishjethani.com/
  webNavigation.onCommitted (2) for https://manishjethani.com/

For chrome://extensions/ it only prints:

  webNavigation.onCommitted (1) for chrome://extensions/

It seems the number of times each webNavigation.onCommitted is called is equivalent to the number of unique filters that are hit.
 

Deleted: example.zip 655 bytes

example.zip 655 bytes Download