sometimes QR codes and words not displayed for sync

[LaurenWags]

Description

First, second, and third attempts to create a sync chain were unsuccessful because QR code and words were not displayed in the UI. I was using a clean profile each time. The fourth time/profile, I was able to see QR code and words.

Similar to #2537

Steps to Reproduce

1. Clean install of 0.58.12
2. Go to hamburger menu and choose Brave Sync
3. Click on Start a new sync chain
4. Choose Phone/Tablet button or Computer button

Actual result:

No QR code or words. Unsure if something went wrong - there's no error message to user.

Expected result:

QR code/words to be displayed as appropriate. OR an error message indicating something is wrong/to try again later/whatever as appropriate.

Reproduces how often:

Unsure

Brave version (brave://version info)

Brave	0.58.12 Chromium: 71.0.3578.80 (Official Build) (64-bit)
Revision	2ac50e7249fbd55e6f517a28131605c9fb9fe897-refs/branch-heads/3578@{#860}
OS	Mac OS X

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds? unsure

Website problems only:

• Does the issue resolve itself when disabling Brave Shields? n/a
• Is the issue reproducible on the latest version of Chrome? n/a

Additional Information

[LaurenWags]

Seen by @AlexeyBarabash as reported here brave/brave-core#1019 (comment)
And I just experienced it again.

[btlechowski]

Reproduced on Windows 7

Brave	0.58.12 Chromium: 71.0.3578.80 (Official Build) (64-bit)
Revision	2ac50e7249fbd55e6f517a28131605c9fb9fe897-refs/branch-heads/3578@{#860}
OS	Windows 7

Reloading the sync page fixes the issue.

[kjozwiak]

Seems like the issue is intermittent but does happen often enough. I reproduced it on my second clean install. The first once worked correctly but the second install was missing the QR code/chain code.

Reproduced using the following:

Brave	0.58.12 Chromium: 71.0.3578.80 (Official Build) (64-bit)
Revision	2ac50e7249fbd55e6f517a28131605c9fb9fe897-refs/branch-heads/3578@{#860}
OS	Mac OS X

[GeetaSarvadnya]

Not seeing both QR code and secrete code word on Windows 10 - Bravebeta 0.59.8

Please note, it was working fine in the morning. I have tested one defect also, all of sudden server stops responding.

[GeetaSarvadnya]

Issue is still reproducible on Brave beta 0.59.12 Hence reopening the issue.

QR code missing:

Code word missing:

[GeetaSarvadnya]

Issue is reproducible on Linux as well - 0.59.12

QR code missing:

Code word missing:

[kjozwiak]

Verification PASSED on macOS 10.14.2 x64 using the following build:

Brave	0.59.20 Chromium: 72.0.3626.28 (Official Build) beta(64-bit)
Revision	997b1040b63bac324e815797ba52be0cd8f616ed-refs/branch-heads/3626@{#461}
OS	Mac OS X

Verification passed on

Brave	0.59.20 Chromium: 72.0.3626.28 (Official Build) beta(64-bit)
Revision	997b1040b63bac324e815797ba52be0cd8f616ed-refs/branch-heads/3626@{#461}
OS	Linux

Verification passed on

Brave	0.59.20 Chromium: 72.0.3626.28 (Official Build) beta(64-bit)
Revision	997b1040b63bac324e815797ba52be0cd8f616ed-refs/branch-heads/3626@{#461}
OS	Windows 7