[tor-bugs] #22713 [Applications]: Logging into ProtonMail causes CPU overload

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Jun 23 20:58:36 UTC 2017


#22713: Logging into ProtonMail causes CPU overload
------------------------------+------------------------------------
     Reporter:  sevispac      |      Owner:
         Type:  defect        |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Applications  |    Version:
     Severity:  Normal        |   Keywords:  ProtonMail, CPU, MacOS
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+------------------------------------
 ProtonMail.com is an encrypted email service. When I try to log into my
 ProtonMail account using the TOR Browser under MacOS 10.12.5, the
 Kernel_task, Tor Browser, and Tor Browser Web Content processes skyrocket
 and overload the CPU (see Activity Monitor attached). This occurs after I
 enter my User Name and Password and try to reach the second password page,
 which never displays.

 This problem does not occur with Safari.

 This problem only started around the beginning of June. Before that,
 ProtonMail worked fine with TOR.

 It isn't clear if the problem is caused by TOR or by the ProtonMail log
 on.

 Once the problem starts, it cannot be corrected by quitting TOR or logging
 out of the account, the computer must be rebooted.

 Notice the ProtonMail Logon attachment shows "A web page is slowing down
 your browser." Clicking either button has no effect on the problem.

 A work-around is to use Safari to access ProtonMail. Please contact me for
 further information. Screen shots are attached.

 Thanks,

 sevispac

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22713>
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