[Bug 51648] New: Firefox 91.0.1: becomes unresponsive when youtube is opened

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51648

Bug ID: 51648
           Summary: Firefox 91.0.1: becomes unresponsive when youtube is
                    opened
           Product: Wine
           Version: 6.15
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 70506
  --> https://bugs.winehq.org/attachment.cgi?id=70506
console messages

Firefox 91.0.1: becomes unresponsive when youtube is opened

Steps to reproduce
$ rm -rf ~/.wine
$ wineboot
$ wine ~/Downloads/Firefox\ Setup\ 91.0.1.exe
Accept the defaults, and launch firefox
Open a new tab (using the mouse)
choose YouTube

Youtube fails to load, and firefox becomes unresponsive

My versions:
Firefox 91.0.1
$ wine --version
wine-6.15-123-gbe8501ac6f1
$ uname -a
Linux cedric 5.13.10-arch1-1 #1 SMP PREEMPT Thu, 12 Aug 2021 21:59:14 +0000
x86_64 GNU/Linux