Continued the [backfills](https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&resultStatus=testfailed%2Cbusted%2Cexception%2Csuccess%2Crunning%2Cpending%2Crunnable&fromchange=bf0c333ee3906ad5fe9a7a86d6dcd390eacb1e39&searchStr=linux%2C18.04%2Cx64%2Cdebug%2Cmochitests%2Cwith%2Cfission%2Cenabled%2Ctest-linux1804-64%2Fdebug-mochitest-browser-chrome-fis-e10s%2Cbc2&tochange=f2ed6497335f2180d5d1ce6de651f278644e665b&selectedTaskRun=VNetlumeTjuQYSov95Ov3Q.0) from Comment 1, they point to Bug 1675820 being the cause of the these failures.
Bug 1699626 Comment 5 Edit History
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Continued the [backfills](https://treeherder.mozilla.org/jobs?repo=autoland&group_state=expanded&resultStatus=testfailed%2Cbusted%2Cexception%2Csuccess%2Crunning%2Cpending%2Crunnable&fromchange=bf0c333ee3906ad5fe9a7a86d6dcd390eacb1e39&searchStr=linux%2C18.04%2Cx64%2Cdebug%2Cmochitests%2Cwith%2Cfission%2Cenabled%2Ctest-linux1804-64%2Fdebug-mochitest-browser-chrome-fis-e10s%2Cbc2&tochange=f2ed6497335f2180d5d1ce6de651f278644e665b&selectedTaskRun=VNetlumeTjuQYSov95Ov3Q.0) from Comment 1, they point to Bug 1675820 being the cause of these failures.