1777654 - Firefox v103b2 has changed behavior when clicking on sidebar-box

Status: RESOLVED WORKSFORME

(Firefox :: Tabbed Browser, defect)

Description

[kellenc0105]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0

Steps to reproduce:

I currently use the Sidebery addon and have been for a few years. Before that I used Tree Style Tabs. I have userChrome.css changes that make it so the sidebar-box is minimized until hovered over. This is the same sidebar-box as the Bookmarks Menu.

For years I have had it so that if I hover over the sidebar on the left side of the Firefox window, it will expand. If it's not expanded, it's not interacted with.
Ever since the update that occurred yesterday, 2022-06-29, I have had this issue where if I am clicking anywhere on the left side of the window where the sidebar-box would expand to if hovered over, it will pass through the click to the sidebar-box (which is Sidebery).

I can somewhat work around it by expanding and then unexpanding and then clicking where I wanted to, but this doesn't always work reliably.

For reference, these are the main userChrome.css changes I have related to the sidebar-box:
#main-window #sidebar-box {
display:block!important;
position:relative!important;
overflow:hidden!important;
position:relative!important;
transition:all 200ms ease!important;
min-width:var(--thin-tab-width)!important;
max-width:var(--thin-tab-width)!important;
z-index:2!important;
}

#main-window #sidebar {
max-width:none!important;
min-width:0px!important;
height:100%!important;
}

/* Show on hover */
#main-window #sidebar-box:hover,
#main-window[inFullscreen] #sidebar-box:hover,
#main-window #sidebar-box:hover #sidebar,
#main-window[inFullscreen] #sidebar-box:hover #sidebar {
min-width:var(--wide-tab-width)!important;
max-width:var(--wide-tab-width)!important;
margin-right:calc((var(--wide-tab-width) - var(--thin-tab-width)) * -1)!important;
z-index:1!important;
}

Actual results:

Clicking in the space that should be part of the content window of the page causes the click to instead be taken by the sidebar-box, which should be hidden.

Expected results:

The same as v102 and before, where clicking anywhere that's not on the sidebar-box while it's minimized should have the click register on the page, not on the sidebar-box.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Firefox::Tabbed Browser' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Comment 2

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:dao, could you have a look please?

For more information, please visit auto_nag documentation.

Comment 3

[Negritas Sergiu, Desktop QA]

Hello! I have tried to reproduce the issue with firefox 104.0a1(2022-07-19) on Windows 10 but unfortunately I wasn't able to reproduce the issue. Could you please answer the following questions in order to further investigate this issue.

1. Could you please provide a screenshot with the issue and a testcase if it's possible in order to further investigate this issue.
2. Does this issue happen with a new profile? Here is a link on how to create one: https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles
3. Does this issue happen in the latest nightly? Here is a link from where you can download it: https://www.mozilla.org/en-US/firefox/channel/desktop/
4. Do you have any addons installed if so can you list them?

Comment 4

[kellenc0105]

Hello, thank you for responding.

I created a new profile and attempted to reproduce. Specifically, I did all of the following in this order:

1. Created a new profile.
2. Opened the new profile in a new window.
3. Added the addon "Sideberry"
4. Went to Sideberry and added the custom CSS from my original profile to its custom CSS dialog.
5. Imported my Sideberry settings from my original profile to the new one.
6. Closed the new profile's window.
7. Copied my "chrome" folder from my original profile and placed the copy in the new profile's folder.
8. Opened the new profile in a new window.
9. Remembered I needed to set "toolkit.legacyUserProfileCustomizations.stylesheets" to true in about:config, and then did so.
10. Re-opened the profile and tested for the issue.

Upon doing this, I did not encounter the issue.
Then, I closed my firefox windows, as there's currently a bug that occurs whenever I open two profiles at once, eventually the original profile window will stop loading new pages, but currently loaded pages are still fully functional. They don't time out or anything, just simply never load. It is only fixed by closing both instances of firefox and letting firefox completely close before re-opening.

After re-opening I realized that creating a new profile automatically changes your default profile. I set my default profile back and re-opened firefox.

I no longer experience the bug for whatever reason on my default profile. Nothing was changed in any settings in my default profile, but I no longer experience the bug after doing those previous steps. I have absolutely no idea why the bug appeared, or why it disappeared.
I suppose this bug can be closed.

Comment 5

[Negritas Sergiu, Desktop QA]

Thank you kellenc0105 for the reply! As per the last comment I will mark this issue as RESOLVED->WORKSFORME, if this issue occurs again please feel free to reopen this issue.

Thank you!