Blank page for magnet link after browser restart

[btlechowski]

magnet protocol is handled by WebTorrent extension. Magnet link is not opened on first page load after restart.

Steps to Reproduce

1. Clean profile
2. Open https://webtorrent.io/free-torrents
3. Click a magnet link
4. Restart browser

Note: the issue is fixed after page reload

Actual result:

Empty page

Expected result:

Webtorrent extension view for that magnet link

Reproduces how often:

Easily reproduced

Brave version (brave://version info)

Brave	0.70.112 Chromium: 77.0.3865.90 (Official Build) beta (64-bit)
Revision	58c425ba843df2918d9d4b409331972646c393dd-refs/branch-heads/3865@{#830}
OS	Ubuntu 18.04 LTS

Version/Channel Information:

• Can you reproduce this issue with the current release? yes
• Can you reproduce this issue with the beta channel? yes
• Can you reproduce this issue with the dev channel?
• Can you reproduce this issue with the nightly channel?

cc @brave/legacy_qa @feross @tomlowenthal

[btlechowski]

The issue is no longer reproducible in 1.2.x. Probably fixed by brave/brave-core#3638. Closing the issue and setting 1.2.x milestone so that it can be verified on all platforms.

[btlechowski]

Verified passed with

Brave	1.2.11 Chromium: 78.0.3904.108 (Official Build) dev (64-bit)
Revision	4b26898a39ee037623a72fcfb77279fce0e7d648-refs/branch-heads/3904@{#889}
OS	Ubuntu 18.04 LTS

Verified test plan from the description. Encountered #7061 while testing.

Verified with

Brave	1.2.23 Chromium: 79.0.3945.70 (Official Build) beta (64-bit)
Revision	65868db27916cebde51fc2465c9b34761e6383e2-refs/branch-heads/3945@{#869}
OS	macOS Version 10.13.6 (Build 17G5019)

• Encountered Blank page for magnet links on clean install #7061 while testing
• Logged follow up issue [Desktop] torrent and magnet link pages show blocked by extension message after browser restart #7330 since I am not getting a blank page, but I am also not able to load the page on restart (refresh does not help). Occurs for both torrent and magnet links:

Verification passed on

Brave	1.2.35 Chromium: 79.0.3945.88 (Official Build) beta (64-bit)
Revision	c2a58a36b9411c80829b4b154bfcab97e581f1f3-refs/branch-heads/3945@{#954}
OS	Windows 10 OS Version 1803 (Build 17134.1006)

• Verified test plan from the description. Encountered Blank page for magnet links on clean install #7061 while testing.