Opened 2 years ago

Closed 2 years ago

Last modified 2 years ago

#22500 closed defect (wontfix)

"A webpage is slowing down your browser.." when accessing ProtonMail with Tor Browser 7.0-build1 (this did not happen in TBB 6.5)

Reported by: cypherpunks Owned by: tbb-team
Priority: Medium Milestone:
Component: Applications/Tor Browser Version:
Severity: Normal Keywords:
Cc: Actual Points:
Parent ID: Points:
Reviewer: Sponsor:

Description

"A webpage is slowing down your browser.." box shows up when log in into ProtonMail (with their onion service https://protonirockerxow.onion/) with Tor Browser 7.0a4 and 7.0-build1 (this did not happen in TBB 6.5)

Security Slider set to Medium in all cases.

This did not happen for me with TBB 6.5.

Wonder if it may be a defect or something normal.

Child Tickets

Change History (8)

comment:1 Changed 2 years ago by gk

Status: newneeds_information

But this works with 7.0-build1 on the "default" slider level?

comment:2 in reply to:  1 Changed 2 years ago by cypherpunks

Replying to gk:

But this works with 7.0-build1 on the "default" slider level?

Yes, both 7.0-build1 and 7.0a4. (Also "A webpage is slowing down your browser.." doesn't show up)

Last edited 2 years ago by cypherpunks (previous) (diff)

comment:3 Changed 2 years ago by gk

Resolution: duplicate
Status: needs_informationclosed

Yes. This is likely "caused" by #21865: JIT was still enabled due to a bug in our code but that is gone now. I am inclined to mark this as wont fix as there is probably nothing we can do without enabling JIT again. However, I'll mark this as duplicate of #21298 for now. Maybe we find a better solution.

comment:4 in reply to:  3 Changed 2 years ago by gk

Resolution: duplicate
Status: closedreopened

Replying to gk:

Yes. This is likely "caused" by #21865: JIT was still enabled due to a bug in our code but that is gone now. I am inclined to mark this as wont fix as there is probably nothing we can do without enabling JIT again. However, I'll mark this as duplicate of #21298 for now. Maybe we find a better solution.

Err. I misremembered the other bug. It is specifically about asm.js. So, let's close this as WONTFIX then.

comment:5 Changed 2 years ago by gk

Resolution: wontfix
Status: reopenedclosed

comment:6 Changed 2 years ago by jiminycricket

Does "wontfix" mean that the issue won't be resolved? Do I have to lower my security settings to get the same performance I was getting before?

comment:7 in reply to:  6 Changed 2 years ago by gk

Replying to jiminycricket:

Does "wontfix" mean that the issue won't be resolved? Do I have to lower my security settings to get the same performance I was getting before?

Yes. The performance gains are tied to the risk we want to mitigate at that slider level.

comment:8 Changed 2 years ago by jiminycricket

Thank you for the reply.

I have set my Tor Browser to "Low" but changed NoScript to allow scripts only on HTTPS sites, as a compromise.

Might I suggest bringing back the "Medium low"/"Medium high" settings, as it used to be, except Medium low blocks scripts on non-HTTPS connections without blocking the performance enhancements?

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