live.browserstack.com - site is not usable

[lol768]

URL: https://live.browserstack.com

Browser / Version: Firefox 70.0
Operating System: Linux
Tested Another Browser: Yes

Problem type: Site is not usable
Description: App fails to open live browsers to test
Steps to Reproduce:

1. Login to BrowserStack
2. Try to Launch IE11 on Windows 7 (any browser really)
3. Observe "Due to network conditions, we cannot create an optimal connection to the remote browser, so we need to fall back to Flash. Please install or enable Flash." error appears
   

Browser Configuration

• None

From webcompat.com with ❤️

[lol768]

Works fine in Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0 + Chrome.

BrowserStack refuse to investigate and their customer support have been useless because v70 hasn't hit stable yet.

https://www.browserstack.com/live is the product. They (ostensibly) have a free trial, but also give out OSS licenses, if it's necessary to reproduce this.

[lol768]

- browser console

Finally displays a no BsLive. fallback to flash

[lol768]

Tried a mozreg, couldn't reproduce the failure condition. Tried a fresh profile, couldn't reproduce the failure condition.

This impacts at least 2 profiles (home and work). I've checked one profile by disabling add-ons. Will see if there are any settings that differ.

Edit: Reproduces in both profiles with add-ons off.

[lol768]

Isolated this down to DoH - network.trr.mode=2 reproduces, network.trr.mode=0 doesn't.

Running mozreg:

 2:30.28 INFO: Narrowed nightly regression window from [2019-05-20, 2019-08-03] (75 days) to [2019-06-27, 2019-08-03] (37 days) (~5 steps left)
 3:51.41 INFO: Narrowed nightly regression window from [2019-06-27, 2019-08-03] (37 days) to [2019-06-27, 2019-07-16] (19 days) (~4 steps left)
 4:48.88 INFO: Narrowed nightly regression window from [2019-06-27, 2019-07-16] (19 days) to [2019-07-07, 2019-07-16] (9 days) (~3 steps left)
 5:35.01 INFO: Narrowed nightly regression window from [2019-07-07, 2019-07-16] (9 days) to [2019-07-12, 2019-07-16] (4 days) (~2 steps left)
 6:22.71 INFO: Narrowed nightly regression window from [2019-07-12, 2019-07-16] (4 days) to [2019-07-14, 2019-07-16] (2 days) (~1 steps left)
 7:10.68 INFO: Narrowed nightly regression window from [2019-07-14, 2019-07-16] (2 days) to [2019-07-15, 2019-07-16] (1 days) (~0 steps left)
 8:55.52 INFO: Narrowed inbound regression window from [c0bcda96, 0fb761cd] (6 builds) to [c0bcda96, 64af83fa] (4 builds) (~2 steps left)
 3:02.68 INFO: Narrowed inbound regression window from [c0bcda96, 64af83fa] (3 builds) to [4d719512, 64af83fa] (2 builds) (~1 steps left)
 3:02.68 INFO: No more inbound revisions, bisection finished.
 3:02.68 INFO: Last good revision: 4d719512b650570bcb67c44ee6cdbdd17d1ad12a
 3:02.68 INFO: First bad revision: 64af83fa5586ed42ff59d8c645edaec9b28e3c88
 3:02.68 INFO: Pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=4d719512b650570bcb67c44ee6cdbdd17d1ad12a&tochange=64af83fa5586ed42ff59d8c645edaec9b28e3c88

 3:03.58 INFO: ************* Switching to mozilla-central
 3:04.06 ERROR: Unable to exploit the merge commit. Origin branch is mozilla-inbound, and the commit message for 64af83fa was:
Merge inbound to mozilla-central. a=merge

[lol768]

Reported on BZ: https://bugzilla.mozilla.org/show_bug.cgi?id=1571276

[softvision-sergiulogigan]

O.o thanks for the in-depth diagnosis!

I'll close this in favor of the Bugzilla one.

[lol768]

Can confirm this is now fixed in 70.0a1 (2019-08-07) (64-bit)

[lock]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue at https://webcompat.com/issues/new if you are experiencing a similar problem.