[BUG] Clicking the top of the address bar causes window to maximize/minimize on KDE Plasma

FlooferLand

Very tiny bug but clicking anywhere on the very top of the address bar causes the window to maximize/minimize because of the custom title bar.
This can be worked around by turning off "Maximize: Windows dragged to top edge" in the Plasma mouse settings or by turning on Use Native Window on Vivaldi

I (and probably other people) tend to do this a lot. I often have my browser fullscreen while i do stuff with files or other apps and i always click the empty space at the top of the address bar to focus back onto Vivaldi. An official fix would be nice!

Banz

I can confirm this, I have the same bug on KDE as well. It happens when clicking on the top of the window, I assume @FlooferLand has the address bar at the top at the window, I have tabs at the top of the window and I've got the same issue (I often trigger this bug when clicking on a tab...).

= My config =
OS: Manjaro
Vivaldi: 7.0.3495.29
KDE Plasma: 6.2.4
Window system protocol: X11

Good catch on the workarounds by the way @FlooferLand !

DoctorG

Can not reproduce on Debian Trixie/sid | KDE Plasma 6.2.5 | Wayland.

Banz

I made a short video clip to showcase the bug: video.

Let me know if I can provide any information that may be of help to reproduce...

DoctorG

@DoctorG @Banz I try on Debian 12 | KDE Plasma 5.27.5.
Works for me correct, no such issue.

DoctorG

@Banz said in [BUG] Clicking the top of the address bar causes window to maximize/minimize on KDE Plasma:

It happens when clicking

Mouse button is ok? I think when button gets worn out, it could be bouncing switch sending two clicks.
I had such with my Logitech M705 mouse some time ago.

Banz

@DoctorG I really don't think it's a mouse issue:

1: my mouse is fairly recent, it's not really worn out yet, and I haven't had any issue with involuntary double clicks anywhere else
2 : the behaviour when I try to reproduce the bug is 100% consistent ; I think if it was a mouse issue I wouldn't get this consistency
3: if I click on top of the window and hold the click without moving, then release it, the bug still happens ; if it was a double click issue I think the behaviour would be different

In your tests, did you make sure to have the "Maximize: Windows dragged to top edge" KDE option toggled ON as well as the "Use Native Window" Vivaldi option toggled OFF? (as @FlooferLand mentioned, toggling either of these two options are workarounds for this bug)

DoctorG

@Banz said in [BUG] Clicking the top of the address bar causes window to maximize/minimize on KDE Plasma:

In your tests, did you make sure to have the "Maximize: Windows dragged to top edge" KDE option toggled ON

Where do you set this for KDE?

as well as the "Use Native Window" Vivaldi option toggled OFF?

Is off.

Banz

@DoctorG said in [BUG] Clicking the top of the address bar causes window to maximize/minimize on KDE Plasma:

@Banz said in [BUG] Clicking the top of the address bar causes window to maximize/minimize on KDE Plasma:

In your tests, did you make sure to have the "Maximize: Windows dragged to top edge" KDE option toggled ON

Where do you set this for KDE?

I have this setting in "Mouse & touchpad" > "Screen edges". The menu should look like this:
KDE menu

DoctorG

@Banz Thanks. I have this setting and can not reproduce.

Could be a Vivaldi Manjaro/Arch/Fedora-only issue.

Banz

@DoctorG
Could be an OS specific thing indeed...

Sidenote: I noticed in the screenshot for the menu I gave you (which I took from the internet, my system not being in English), the option "Switch desktop on edge" should actually be disabled, if it's "Always enabled" like in the screenshot, the bug doesn't happen.

In any case, thanks @DoctorG for your time trying to reproduce this issue.
Maybe someone else will be able to figure out the exact settings that allow for this bug to happen...

DoctorG

@Banz said in [BUG] Clicking the top of the address bar causes window to maximize/minimize on KDE Plasma:

Sidenote: I noticed in the screenshot for the menu I gave you (which I took from the internet, my system not being in English), the option "Switch desktop on edge" should actually be disabled,

I will test that on Debian.
//EDIT: What a pity, i can not reproduce you issue.

Banz

@DoctorG said in [BUG] Clicking the top of the address bar causes window to maximize/minimize on KDE Plasma:

I will test that on Debian.
//EDIT: What a pity, i can not reproduce you issue.

Unfortunate indeed. Still, many thanks for trying @DoctorG !

To sum it up if anyone else wants to pursue this issue, the required settings identified to reproduce the issue are :

KDE:
- Setting "Maximize: Windows dragged to top edge" toggled ON
- Setting "Switch desktop on edge" disabled
Vivaldi:
- Setting "Use Native Window" toggled OFF
Steps (showcasing video):
- 1: Have a Vivaldi window maximized
- 2: Single click on the very top of the window in an empty space

Obviously these settings aren't enough, there must be something else in play, as @DoctorG wasn't able to reproduce.
Notably, the OS, window system protocol, or KDE version may have an impact.

As of now the bug has been identified on:

Fedora
Manjaro / X11 / KDE 6.2.4

It has not been reproduced on:

Debian 13 / Wayland / KDE 6.2.5
Debian 12 / KDE 5.27.5

Hope this helps.

Banz

I just did some more testing, and it turns out it's probably not a Vivaldi issue, as I was able to reproduce the same behaviour with Chromium and VSCode.