This issue has been available for more than 365 days, and should be re-evaluated. Please re-triage this issue.
The Hotlist-Recharge-Cold label is applied for tracking purposes, and should not be removed after re-triaging the issue.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

I verified that I'm still seeing these same failures on current canary (59.0.3063.0)

Kinuko/kouhei: I'm trying to ensure all Hotlist-Interop bugs get triaged (verified, Available with priority assigned or explicitly WontFix'd, etc.).  This one has been untriaged for over a year.  Can you please take a look and decide if it's something loading-dev will plan to look into someday.

Firefox and Edge: all tests PASS.
We should fix this given that at least 2 other UA are aligned and 100% PASS.

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Per https://wpt.fyi/results/html/browsers/history/the-history-interface/007.html?label=experimental this is failing only in Chrome. The test times out in Safari so there may be a problem there as well, but the subtests do pass in Edge and Firefox, so yes, this is an interop issue.