(In reply to Kagami :saschanaz from comment #2) > I can repro this on my everyday profile but not on a fresh profile, which is interesting... This was because I have HTTPS-only mode on my daily profile so didn't get a mixed content error, while a fresh profile has no HTTPS-only and thus gets one. Fixing the `<script>` line as `<script src="https://code.jquery.com/jquery-1.11.1.min.js"></script>` makes the behavior consistent on every browser, and the expected results is "only a few characters are selected", caused by `event.preventDefault()` inside `content.move`, which is called by a `mousemove` event listener. Does this help you?
Bug 1707925 Comment 3 Edit History
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(In reply to Kagami :saschanaz from comment #2) > I can repro this on my everyday profile but not on a fresh profile, which is interesting... This was because I have HTTPS-only mode on my daily profile so didn't get a mixed content error, while a fresh profile has no HTTPS-only and thus gets one. Fixing the `<script>` line as `<script src="https://code.jquery.com/jquery-1.11.1.min.js"></script>` makes the behavior consistent on every browser, and the expected result is "only a few characters are selected", caused by `event.preventDefault()` inside `content.move`, which is called by a `mousemove` event listener. Does this help you?