[BUG]: Buzz! The Mega Quiz (PAL) - Blue button presses itself

[LvDown]

Describe the Bug

(I have not tried this in NTSC regions.)
From the autosave dialog onwards, the blue button keeps pressing itself on all controllers, albeit randomly and in a different controller every time (although sometimes it happens on many controllers at the same time), making the game unplayable.
The language select in other versions of the same game in different languages is also affected.
The bug also occurs on the same computer under Windows 11.
Other games from the same franchise do not seem to be affected (NTSC-U Hollywood Quiz), but I haven't been able to do more testing.

Reproduction Steps

Launch the game with the buzz buzzers connected and get past the autosave screen at boot.

Expected Behavior

The blue button should only be pressed when done through its mapping, and not by its own (It occurs even when no buttons are mapped).

PCSX2 Revision

v1.7.4973

Operating System

Linux (64bit) - Specify distro below

If Linux - Specify Distro

Arch (EndeavourOS)

CPU

AMD Ryzen 7 5700U with Radeon Graphics

GPU

AMD ATI 03:00.0 Lucienne

GS Settings

No response

Emulation Settings

Both MTVU and instant VU1 seemed to make no difference, and neither did fast boot.

GS Window Screenshots

No response

Logs & Dumps

No response

[seta-san]

Blue button is mapped to R1 by default. If it’s pressure sensitive then it might set off with little to no touching.

[LvDown]

The bug occurs even with no buttons mapped to the buzzers with no other controller connected to neither the computer or the emulated ps2 (not even a dualshock, only one buzzer mapped to keyboard in testing)

[Borntotouch]

I have the same issue with the "Buzz! The Mega Quiz (Europe) (En,Fr,Nl)" iso game...
Any updates on this by chance ?

[zzamizz]

I was going crazy thinking it's a personal hardware problem, glad someone else experienced it. We were able to play 1 game with pure luck without the blue button spam, but sometimes between rounds it would do it (but ONLY for Player 2)

Even if Player 2 were to use a different Buzz controller (out of the 4 available) it would still only spam it for that player. So Player 1 is never affected by this.

The bug occurs even with no buttons mapped to the buzzers with no other controller connected to neither the computer or the emulated ps2 (not even a dualshock, only one buzzer mapped to keyboard in testing)

This is true, I'm guessing the problem is most likely in the plugin (well, no longer a plugin in latest PCSX2) that handles Buzz controllers.

[seta-san]

It has the buttons hard coded in a way that they are still mapped even if you don’t map them yourself if I remember correctly.

[mariup4p]

Can't we hope that it will be fixed in the future?