Two observations:
1) The symptoms meticulously described by
therube correspond to mine described throughout this thread with Firefox 48.0.2, beginning with NoScript 5.1.0rc2, including the appearance of what's left in NoScript's spot in my toolbar after it disappears, shown in his image two posts above. (I reverted back to NoScript 5.0.10 and set it not to update, after my last comments earlier about 5.1.2rc3.)
2) I suppose I should be pleased that we now know that the disappearings (can) also occur with up to Firefox 56, because (my guess is that) when this gets fixed, it very well may also get fixed in Firefox 48.0.2, which keeps me alive and well in macOS Snow Leopard.... However, I strongly suspect that
therube and I share something else in common, but it's rare — otherwise, I'd think that this thread would be barraged with the same complaints by everybody else screaming bloody murder. Accordingly, as a start, here is a dump of my Add-on Extensions for
therube to peruse, with a view toward finding one we have in common that might be triggering our presumably rare (?) post-NoScript 5.1.0rc1 disappearing act:
Code: Select all
- about:addons-memory 12
- AdBlocker for Facebook™ 0.1.8
- Add-ons Manager Context Menu 0.4.2.1-signed.1-signed
- Addons Manager Hilite 3.0
- Advanced Tab Navigation 1.1.2
- BetterPrivacy 1.74
- Bloody Vikings! 0.8.6
- BugMeNot Plugin 3.1-signed.1-signed
- Cache Disabler 1.2.0
- Classic Theme Restorer 1.7.1
- Clearly 10.2.1.7.1-signed
- Color Management 0.5.3.1-signed.1-signed
- Cookies Manager+ 1.14.3
- DblClicker 1.8.1
- Decentraleyes 1.3.10
- Disable WebRTC 1.0.16
- Disconnect 5.18.21
- Dm0nKs Spotify Link Redirector 1.0.rev39.1-signed.1-signed
- Docs Online Viewer 5.5.5
- Extension List Dumper 2 1.0.2
- Extension Options Menu 2.18
- external IP 0.9.9.6.1-signed
- Firefox Hello 1.4.4
- Flash Video Downloader - YouTube HD Download [4K] 13.2.4
- FlashStopper 1.4.5
- FoxBleed 0.1.1-signed.1-signed
- Go Parent Folder 2.9.1.1-signed.1-signed
- Greasemonkey 3.11
- History Submenus II 4.1.1
- Honey 9.7.1
- HTTPS Everywhere 5.2.21
- ImageShack right-click 1.0.1.1-signed.1-signed
- Multi-process staged rollout 1.1
- Multirow Bookmarks Toolbar Plus 1.10
- NoScript 5.0.10
- NoSquint Plus 56.0
- Open Download Manager on Download 0.1.1-signed.1-signed
- Pocket 1.0.4
- Precise Clear History 1.3.1-signed.1-signed
- Preserve Download Modification Timestamp 2011.03.21.22.1-signed.1-signed
- ProfileSwitcher 1.7.6.1
- RAMBack 1.0.1-signed.1-signed
- Remove Visited Link 0.3.2
- Remove/Crop-to Selection 0.2
- Saved Password Editor 2.10.3
- Show me the password 1.1.1.1-signed.1-signed
- Show Parent Folder 2.1.1
- Slim Add-ons Manager 14.1
- SocialReviver 4.4.9
- Space Next 0.34.1-signed.1-signed
- Status-4-Evar 2017.08.20.15
- Strict Pop-up Blocker 0.3
- Thumbnail Zoom Plus 4.2
- TinEye Reverse Image Search 1.2.2
- Twitter Side Switcher 1.0.4.1.1-signed.1-signed
- uBlock Origin 1.13.8
- User Agent Switcher 0.7.3.1-signed.1-signed
- X-notifier 3.5.23
- YouTube High Definition 61.28
memo: I suspect a possible Extension trigger because, as I said in a post above:
But now there's a curiosity that's got me bewildered: the additional third disappearance of the NoScript entry from the Mac Firefox menu bar Tools menu that began also with 5.1.0rc2 has continued after my downgrade to 5.0.10!!... I conjecture that whatever changed in 5.1.0rc2 that broke the appearance of NoScript in the Firefox 48.0.2 toolbar & contextual menu might have left lingering damage that now affects earlier versions before the problem began.
- -
Edit: Woops, I forgot: it can't be triggered by an extension, because the disappearing act happens for me in a fresh new profile, too.