[Pale Moon] UO (when used with uMatrix) displays old connected domains

[quroe]

Describe the issue

UO continues to handle 1st displayed site's rule when new site opened.
UO displays old connected domains in Dynamic filtering pane.
If using uMatrix,this issue occurs.

One or more specific URLs where the issue occurs

https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/

Screenshot in which the issue can be seen

Steps for anyone to reproduce the issue

1. Open URL in new tab.(ex.addon page)
2. Open external domain link in current tab.(ex.github/Project change log)
   If open external domain link in new tab,this issue dose not occur .

Your settings

Windows7 x64
Pale Moon 26.1.1 x86
uBlock Origin version: 1.6.4rc0
uMatrix 0.9.3.4
checked "Advanced-user mode"

[gorhill]

I can not reproduce with Pale Moon 25.8.1. Is this 26.1.1 version a beta one?

[quroe]

26.1.1 is official stable version.
https://www.palemoon.org/palemoon-win32.shtml
I also tried Pale Moon 25.8.1.

1)Start Pale Moon 25.8.1 with new profile.
2)Install uMatrix 0.9.3.4 and uBlock Origin 1.6.4rc0.
3)Restart Pale Moon.
4)Open URL and click external domain link.
5)This issue occurs.

[gorhill]

Ok, I could reproduce with 25.8.1.

[gorhill]

• So both uBO 1.6.4 and uMatrix 0.9.3.4 needs to be installed and enabled.
• Restart Pale Moon.
• Open new tab.
• Paste https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/ in address bar.
• Click "Add-on home page" link on the right-hand sidebar.
• Content of uBO's advanced panel still contains hostnames of previous page.
• Content of uMatrix panel is correct.

Manually disabling/enabling uBO fixes the issue -- so there is something going wrong during uBO's initialization when uMatrix is present.

[gorhill]

For unknown reasons, Pale Moon does not fire onLocationChange notifications during navigation, it fires the notification only for when a new tab is created, then goes silent.

Can also reproduce with Firefox 31.
Can not reproduce with Firefox 38+.

[gorhill]

Observation: When disabling/enabling uBO in presence of uMatrix, this fixes uBO, but this causes uMatrix to start to misbehave.

[TPS]

@gorhill I hope you don't mind I copied this issue into the above linked 1 to be fixed in Pale Moon.

[gorhill]

There is no issue with Pale Moon. The bug was fixed, and the cause was finally identified as a variable collision issue -- apparently older Firefox versions used the same context for all frame scripts. The onLocationChange not firing was a symptom of this.