Wp-calypso: Gutenberg: White/blank screen in Edge

[kriskarkoski]

Steps to reproduce

1. Starting at URL: wordpress.com
2. Start a new post on a site you've opted into Gutenberg on or opt-in to Gutenberg once the Editor opens
3. See a blank/white screen instead of Gutenberg

What I expected

To be able to use the Gutenberg editor

What happened instead

The editor does not load and shows a blank/white screen instead

This error can be seen in the console:

Browser / OS version

Reproduced on Windows 10/IE 12 17.17134 (Browserstack)

Screenshot / Video

Context / Source

user-report

[aleone89]

Hello!

I've also had this twice in the last hour.

HC-8053837
HC-2563502

[sandymcfadden]

Another case reported here 6703301-hc

[carladoria]

Another one in 6239207-hc

[jjchrisdiehl]

Here 1839667-hc

[desnum]

A couple cases for Edge conflicts:
8054630-hc
8007364-hc

And one for Explorer:
8060164-hc

[kwight]

Noting that this error doesn't seem to guarantee the white screen; after clearing browser data, Gutenberg would load while still getting the console error.

[kwight]

By the way, don't test this with an automattician account; the troublesome script is bypassed in that case. 🙃

[kwight]

Fix available for review in D20838-code. Sandboxing seems to mitigate the issue somehow, so it's tough to test, but I'm hoping that eliminating the script error will allow a clean load for anyone on Edge.

[kwight]

D20838-code is deployed, and seems to do the trick; I can sign up for an account in Edge, opt in to Gutenberg, be forwarded to wp-admin, and have Gutenberg load right away.

[chaitanyamsv]

Another report in 8063683-hc