Another aspect that I managed to check today was with the unzipped version ([66.0.2](https://archive.mozilla.org/pub/firefox/candidates/66.0.2-candidates/build1/win64/en-US/)). Trying to access webpages from such builds displayed the Potential Security Issue for any attempt.
Bug 1540133 Comment 3 Edit History
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Another aspect that I managed to check today was with the unzipped version ([66.0.2](https://archive.mozilla.org/pub/firefox/candidates/66.0.2-candidates/build1/win64/en-US/)). Trying to access webpages from such a build, displayed the Potential Security Issue for any attempt.