With multiprocess (e10s) enabled, LeechBlock prevents the title bar and security icon from being updated when a different tab is selected. There also seem to be some graphical errors, namely the bars separating unfocused tabs remain around the newly focused tabs when they should disappear. Presumably this is the result of LeechBlock preventing the UI components from refreshing.
To reproduce:
Make sure multiprocess windows are enabled.
Open a random website in tab no. 1.
Then open a second page in a new tab (no. 2).
Switch back to the previous tab (no. 1). Note that the security icon and title remain the same as the second tab (no. 2).
Here's a screenshot of an example. I opened openstreetmap.org, then opened a new tab and went to about:support. I then switched back to the openstreetmap tab, but the title still displays "Troubleshooting information" and displays the Firefox icon that only displays on local Firefox pages—not the proper green lock icon.
This is a security risk, since a user could switch to an insecure website but think it is a secure one.
I tested this on a fresh version of Firefox 49 on Ubuntu 16.04 with only the LeechBlock add-on. When it is disabled everything is fine, but when enabled this bug consistently occurs (even when LeechBlock is not actively blocking any pages).
With multiprocess (e10s) enabled, LeechBlock prevents the title bar and security icon from being updated when a different tab is selected. There also seem to be some graphical errors, namely the bars separating unfocused tabs remain around the newly focused tabs when they should disappear. Presumably this is the result of LeechBlock preventing the UI components from refreshing.
To reproduce:
Make sure multiprocess windows are enabled.
Open a random website in tab no. 1.
Then open a second page in a new tab (no. 2).
Switch back to the previous tab (no. 1). Note that the security icon and title remain the same as the second tab (no. 2).
Here's a screenshot of an example. I opened openstreetmap.org, then opened a new tab and went to about:support. I then switched back to the openstreetmap tab, but the title still displays "Troubleshooting information" and displays the Firefox icon that only displays on local Firefox pages—not the proper green lock icon.
This is a security risk, since a user could switch to an insecure website but think it is a secure one.
I tested this on a fresh version of Firefox 49 on Ubuntu 16.04 with only the LeechBlock add-on. When it is disabled everything is fine, but when enabled this bug consistently occurs (even when LeechBlock is not actively blocking any pages).