Dock transparency disappears after exiting the Overview

[omentic]

Describe the bug
On GNOME 40, the panel's background turns to black regardless of opacity setting after exiting the Overview menu. Locking and unlocking the screen or disabling and enabling the extension temporarily fixes the problem.

This was the most common bug reported in #1303.

Linux distribution and version
Arch 5.12

GNOME Shell version
40.1

Dash-to-Panel version
42

Where was Dash-to-Panel installed from?
gnome-shell-extension-dash-to-panel-git from the AUR.

Screenshots / Video captures
Before entering the overview:

After leaving the overview:

Additional Info
A tremendous thank you to everyone involved in porting this extension to GNOME 40, especially @philippun1!

[Testing-XYZ]

Not sure how to fix this issue in extension but here is a workaround. Run the following command in bash at startup:

gdbus call --session --dest org.gnome.Shell --object-path /org/gnome/Shell --method org.gnome.Shell.Eval 'Function.prototype.clone = function() { var that = this; var temp = function temporary() { return that.apply(this, arguments); }; for(var key in this) { if (this.hasOwnProperty(key)) { temp[key] = this[key]; } } return temp; }; Main.overview._hideDoneClone = Main.overview._hideDone.clone(); Main.overview._hideDone = function() { Main.overview._hideDoneClone(); Main.loadTheme(); };'

Basically reloads theme after hiding overview and as a result there is a slight delay. The clone function comes from here. It's quite inelegant but I'm not familiar with Gjs.

[philippun1]

@Testing-XYZ @J-James I made a pull request #1337 (yes, this is some leet shit ^^). Please check if this fixes the issue for you.

[omentic]

It does indeed! The panel does noticeably flash black when exiting the overview quickly, but I think that's more to do with a different bug (the slight jumpiness of the exit overview animation)

[omentic]

Hmm, strangely enough, this fix stops working after some time. Disabling and reenabling the extension brings back the transparently temporarily, but only until the next overview exit.

[philippun1]

@J-James I had this behaviour once, but I cannot reproduce it. Indeed strange. I will keep an eye on this.

[sc44]

Hello,
i used the Transparent Shell extension to fix this.
But since yesterday i test the fix from @philippun1 and i have no problems. The fix runs for me. Thanks.

Gnome Shell ver. 40.1 on Arch Linux.
Dash-to-Panel ver. 9999 git with fix. Not AUR.

[j-zero]

I can confirm this bug on Arch Linux, Gnome Shell 40.1 and dash-to-panel-git from AUR

[ConstantMan]

I can confirm this bug on Arch Linux, Gnome Shell 40.1 and dash-to-panel-git from AUR

[jderose9]

It seems like this one was resolved by ec4e078. Let me know if it persists and I will re-open.

[omentic]

I am actually seeing a bunch of more bugs after updating on Wayland - the disappearing transparency remains, the overview has become unusable, and switching between the desktop and the overview is stuttery and flashes grey. I'll try and make sure this isn't an issue on my end, and get a recording this afternoon.

[jderose9]

Oh I see, yes this still seems to be broken in Wayland.

[omentic]

Here's a recording of the overview issue:

greyscreen.mp4

[ConstantMan]

It seems like this one was resolved by ec4e078. Let me know if it persists and I will re-open.

I can confirm this bug remains on Arch Linux, Gnome Shell 40.1 X11 and dash-to-panel-git from AUR

[philippun1]

This bug seems to be fixed with 258083f. Tested on Ubuntu and Manjaro.

[ConstantMan]

This bug seems to be fixed with 258083f. Tested on Ubuntu and Manjaro.

Manjaro and Ubuntu don't support gnome-shell 40 yet
so the bug remains
Tested on Arch Linux, Gnome Shell 40.1 X11 and dash-to-panel-git from AUR

[jderose9]

I think this one is fixed, for real this time.

[philippun1]

@KonstantMan Please pull the latest master branch, the AUR package is outdated, and verify again.
Ubuntu with shemgp PPA has Gnome 40.1 and Manjaro testing has Gnome 40.2.

@jderose9 Sadly I just noticed that it does not work if you use the three finger swipe up gesture on wayland. Clicking on "Show Applications" and using the Super Key works fine though. Anyone can confirm this?

[omentic]

Something I didn't notice before is that this isn't just transparency styles, overriding the panel background color at all (even with a solid color) will trigger this bug.

[Testing-XYZ]

Sadly I just noticed that it does not work if you use the three finger swipe up gesture on wayland. Clicking on "Show Applications" and using the Super Key works fine though. Anyone can confirm this?

I can confirm that gesture-triggered overview do not produce transparency. Tested on Arch and dash-to-panel-git from AUR.

[jderose9]

Ok, I will do the shameful double re-open :)

[jderose9]

Looks like in overview.js, it will need to be overridden somehow where the panel style is cleared. There's one instance in _gestureEnd and two in runStartupAnimation.
https://gitlab.gnome.org/GNOME/gnome-shell/-/blob/master/js/ui/overview.js#L396
https://gitlab.gnome.org/GNOME/gnome-shell/-/blob/master/js/ui/overview.js#L650
https://gitlab.gnome.org/GNOME/gnome-shell/-/blob/master/js/ui/overview.js#L671

The _gestureEnd is going to be a pain to override though with the way the signal is bound to that method on init.

[jderose9]

Ok, anyone want to give this new commit a whirl? Thanks!

[omentic]

Looks to be working!

[philippun1]

@jderose9 Can confirm it works now.

[philippun1]

Now there is
JS ERROR: Extension dash-to-panel@jderose9.github.com: TypeError: can't redefine non-configurable property "style"
after suspend and resume.
A simple try/catch fixes it, but I'm not sure if there are any drawbacks...

@jderose9 I made a pull request #1369 which fixes the issue. Hopefully this time for real.

[omentic]

When I get that error, my bar looks like this:

The applications are squished and the bar appears over fullscreen windows.

[jderose9]

@philippun1 Made commit 6e50948 before I saw your PR, sorry!

[omentic]

This issue hasn't shown up at all since 35081df, so I'm closing this unless anyone else still has problems. Thanks to everyone who worked on fixing it!