Seems like in the "full patch" push you forgot the patch and pushed the same code as in the "baseline". Anyways, seems like "change CUI.jsm + panelUI.js" introduced the regression.
Bug 1650404 Comment 8 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Seems like in the "full patch" push you forgot the patch and pushed the same code as in the "baseline". Anyways, seems like ["change CUI.jsm + panelUI.js"](https://treeherder.mozilla.org/perf.html#/compare?originalProject=try&originalRevision=4ad3b917903a91c024d2b5262cc675f10527b9dc&newProject=try&newRevision=4ad3b917903a91c024d2b5262cc675f10527b9dc&framework=1&pageTitle=CUI%2BPanelUI) introduced the regression.