uMatrix 9.1.3 disable on Firefox restart (private browsing)

[AJ79]

Hi, I notice version 0.9.1.3 is disable when restart Firefox version 38.5 and 38.6 in private browsing.

http://i.imgur.com/vIESs6U.png

However 0.9.1.2 is not

[AJ79]

Sorry if not clear enough, I meant disable on Homepage only when restart FF in private browsing.

[gorhill]

Your picture shows that for the page about:blank, matrix filtering is disabled. Matrix filtering is disabled by default for about:blank. Just turn it on if you want it on.

[AJ79]

The page shows "about:blank" after Firefox restarted. I have set Firefox settings to "always use private browsing"

Another try, after restart Firefox
http://i.imgur.com/mjOfVin.png

Then I refresh Firefox browser (not touching anything in uMatrix)
http://i.imgur.com/76DkVul.png

Btw I using Firefox add-on Personal Menu in restarting the browser, ain't sure if it related to the issue
https://addons.mozilla.org/en-US/firefox/addon/personal-menu/

[gorhill]

The two first images are two different scopes. One for which matrix filtering is disabled (blank.about-scheme), and one for which matrix filtering is enabled (yahoo.com). Matrix filtering can be enabled/disabled on a per-scope basis. The about-scheme scope has matrix filtering disabled by default.

I don't any issue so far.

[AJ79]

Weird... I suppose it's my end problem after restart Firefox, Matrix filtering shows "blank.about-scheme" I'll try figure it out.

Thanks heaps for your time Mr Gorhill

[gorhill]

Matrix filtering shows "blank.about-scheme"

You mean it shows blank.about-scheme while on a Yahoo page?

If so, then this is an issue, and I will look into it.

[5t3f4n]

@gorhill

You mean it shows blank.about-scheme while on a Yahoo page?

I think he does. If you look closely at this screenshot you can see that it's definitely not a blank page behind the matrix. I think it's incorrectly displaying blank.about-scheme.

[gorhill]

I can't reproduce what you have. I did set private browsing in about:config, restarted FF to open on the tab last opened, but it opens with no tab. I will need exact steps to reproduce, something I can follow without guessing anything.

[Blutgang]

@gorhill Can you reproduce with these steps?

1. Go to about:preferences
2. Click on the drop-down menu for When Firefox starts: and change it to Show my home page
3. Set your Home Page to about:blank|https://www.yahoo.com/
4. Restart Firefox
5. Firefox should open with about:blank and yahoo.com tabs with the blank.about-scheme scope

Edit: Not sure if it this is related... Repeat the same steps above and
6. Go to about:addons and you will see that the scope is also blank.about-scheme instead of addons.about-scheme

[AJ79]

@Blutgang . Thanks alot for your explaining!

@gorhill, yes it shows blank.about-scheme while on a Yahoo page.
My situation

1. Firefox options > about:preferences#general : When Firefox starts - Show my home page
   http://i.imgur.com/bEcx6nP.jpg
2. Firefox options > about:preferences#privacy : Firefox will never remember history
   http://i.imgur.com/M2NJNpW.jpg
3. Restart Firefox
   It shows "blank.about-scheme" on homepage regardless what sites I've set and after refresh browser all is ok

[0xBRM]

Opening a previous session on Firefox will always set the scope to blank.about-scheme for all (non-cached, which are all of them) tabs until a refresh occurs (new tabs behave normally).

It looks very similar to this problem.

My custom about:config settings can be found here.

[Alpengreis]

Any news about this?

This is really a serious one, because any links and things which should be blocked are not blocked per default in such a case!

[gorhill]

As much as I tried, including the steps described here, I can't reproduce. 0.9.1.2-dev.2 is out, see if the problem is still there.

[0xBRM]

Yes.

[Alpengreis]

Yes, the problem is not solved!

It's very easy to reproduce (here):

1. I CLOSE the browser (Firefox) first.
2. I open my text-editor (Notepad++) write for example https://www.google.ch and click on this link ...

Then the problem appears.

Note: has nothing to do with private mode ...

[gorhill]

uBlock issue 452 is interesting with respect to the bug here. Firefox API reports a document being opened, yet when trying to find the document among existing tab objects, it can't be found: the supposedly top document is actually a child of an about:blank tab object. This matches well the symptoms here.

[Alpengreis]

Ok, I see ...

You can fix this in uMatrix too? If not, you could look into NoScript, there is no such problem.

[gorhill]

There is no concept of scope in NoScript. There would be no issue here if there was no concept of scope in uMatrix or uBlock.

[eduardoeae]

Just to clarify, this did not happen before 0.9.1.3. Could it be related to the fix of #246 ?

[Alpengreis]

@gorhill

Unfortunately, you don't answer if it's fixable or not ...

The situation NOW is not really good for a "normal" user!

With DEFAULT uMatrix prefs and if the browser is not running already, malware can principally start a malware page, because uMatrix status is "ALL green" ...

A user has explicit to remove the related matrix-off switch to prevent this!

[gorhill]

Unfortunately, you don't answer if it's fixable or not

Until I can reproduce, I won't be able to answer.

malware can principally start a malware page, because uMatrix status is "ALL green"

Even when this is fixed, this will still be true, because there is absolutely no guarantee whatsoever that Firefox will not load a page before all extensions are ready.

[Alpengreis]

You can NOT reproduce it?? Uhh, then it's indeed difficult. What is your OS/Browser combination? My is Win 7 Ultimate x64 and Firefox (stable). However: this is interesting info for me: I will TRY to find out, what is responsible for this behaviour ...

Your argument about the extension: okay, I understand, thanks for clarification!

Thank you for fast response!

[Alpengreis]

This COULD be interesting: I'm relatively sure, that uBlock had the same behaviour too. But - at least with actual dev - it's NO MORE the case ...

EDIT: Not sure about uBlock before ... however: uBlock has not or no more this behaviour ...

[gorhill]

Maybe e088e9c fixed this, if you guys can test with 0.9.1.3-dev.4.

[0xBRM]

Yup, it worked.

[Alpengreis]

Works! Well done!