🇬🇧United Kingdom @jeromebeckett

Thanks for your work on this Rob.

Our client has been reporting payment failures due to the same issue.

The patch in #8 applies cleanly to 8.x-1.4 so we are going to apply this to our live site. I will report back once we know if we are seeing a reduction in the amount of payment failures due to 3DS or not.

As stated in #10, the issue referred to in #9 has been fixed and merged. Now that has been done can we commit and merge the patch to 8.x-1.x-dev?

Updating admin_toolbar to >= 3.4.0 fixes the issue, but then the toolbar is completely hidden. For those that want both the admin toolbar and the Gutenberg editor, one can include the following CSS in the admin theme (or include it as a module library):

.gutenberg__editor .interface-interface-skeleton {
    position: relative;
}