mouse scrolling activates back/forward in browser

Ronald Klop <[email protected]>
Newsgroups gmane.os.freebsd.devel.x11
Message-ID <[email protected]> 
Hi,

When I use the scrollwheel of the mouse my browser triggers 
back/forward. What happens is this:
If I scroll up (button 4) after scrolling down (button 5) it triggers 
button 8 and 9.
I see it generating a ButtonPress 8/9 if I go down and than up. And a 
ButtonRelease 8/9 if I first go up and than down.

I have no config in /etc/X11. Xorg logs: https://www.klop.ws/Xorg.0.log

This happens on the trackpad of the laptop and with a bluetooth 
connected mouse.
What makes it a little more complex is that this is running FreeBSD 14 
in VirtualBox on Windows 10 with. NB: It happened in Virtualbox 5 and 
now in 6 also.

This started around a year ago. 
https://lists.freebsd.org/pipermail/freebsd-ports/2020-March/117879.html 
But didn't have time to look into it.

Any thoughts or similar experiences?

Regards,
Ronald.



Output of xev:

ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x3200002, time 183573903, (25,45), root:(968,1279),
     state 0x1000, button 5, same_screen YES

LeaveNotify event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x0, time 183573903, (25,45), root:(968,1279),
     mode NotifyUngrab, detail NotifyInferior, same_screen YES,
     focus YES, state 0

ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x3200002, time 183575432, (25,45), root:(968,1279),
     state 0x0, button 5, same_screen YES

EnterNotify event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x0, time 183575432, (25,45), root:(968,1279),
     mode NotifyGrab, detail NotifyInferior, same_screen YES,
     focus YES, state 4096

KeymapNotify event, serial 38, synthetic NO, window 0x0,
     keys:  29  0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
            0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x3200002, time 183575432, (25,45), root:(968,1279),
     state 0x1000, button 5, same_screen YES

LeaveNotify event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x0, time 183575432, (25,45), root:(968,1279),
     mode NotifyUngrab, detail NotifyInferior, same_screen YES,
     focus YES, state 0

ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x3200002, time 183576483, (25,45), root:(968,1279),
     state 0x0, button 4, same_screen YES

EnterNotify event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x0, time 183576483, (25,45), root:(968,1279),
     mode NotifyGrab, detail NotifyInferior, same_screen YES,
     focus YES, state 2048

KeymapNotify event, serial 38, synthetic NO, window 0x0,
     keys:  29  0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
            0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0

ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x3200002, time 183576483, (25,45), root:(968,1279),
     state 0x800, button 4, same_screen YES

LeaveNotify event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x0, time 183576483, (25,45), root:(968,1279),
     mode NotifyUngrab, detail NotifyInferior, same_screen YES,
     focus YES, state 0

ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x3200002, time 183576483, (25,45), root:(968,1279),
     state 0x0, button 8, same_screen YES

EnterNotify event, serial 38, synthetic NO, window 0x3200001,
     root 0x51d, subw 0x0, time 183576483, (25,45), root:(968,1279),
     mode NotifyGrab, detail NotifyInferior, same_screen YES,
     focus YES, state 0

KeymapNotify event, serial 38, synthetic NO, window 0x0,
     keys:  29  0   0   0   0   0   0   0   0   0   0   0   0   0   0   0
            0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0



$ xev | grep -i button # for a shorter list
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x1000, button 5, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x1000, button 5, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x1000, button 5, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x1000, button 5, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 4, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x800, button 4, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 8, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 9, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 4, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x800, button 4, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 4, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x800, button 4, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 4, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x800, button 4, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 4, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x800, button 4, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 4, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x800, button 4, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 4, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x800, button 4, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x1000, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 8, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 9, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x1000, button 5, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x1000, button 5, same_screen YES
ButtonPress event, serial 38, synthetic NO, window 0x3200001,
     state 0x0, button 5, same_screen YES
ButtonRelease event, serial 38, synthetic NO, window 0x3200001,
     state 0x1000, button 5, same_screen YES
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