I'm not sure what you mean by "double tab view." The only new thing I'm aware of relating to tabs is a new Show All Tabs icon that looks like a folder and shows between the New Tab + and the window minimise icons.

If it is that you are referring to you can get rid of it but not in a simple way. See: https://support.mozilla.org/en-US/questions/1466632#answer-1678349

Do you mean the thumbnail image that you see if you hover a tab?

There are two Boolean (true/false) prefs in about:config to control what to show when you hover a tab. This pref controls whether to enable this new hover feature or only show the legacy tooltip with the title.

• browser.tabs.hoverPreview.enabled

This pref controls whether to show a thumbnail or a two line tooltip with title and URL.

• browser.tabs.hoverPreview.showThumbnails

The latter can be controlled via "Settings -> General -> Tabs".

• https://support.mozilla.org/en-US/kb/about-config-editor-firefox

I found browser.tabs.hoverPreview.enabled and there is no delete or disable in Advanced Preferences. So it looks like i am stuck with this add on. Still can't figure out why it's needed. Thanks for your reply.

Showing the thumbnail can be controlled via "Settings -> General -> Tabs -> Show an image preview when you hover on a tab".

I did that suggestion and it didn't change.

Hello

https://connect.mozilla.org/t5/discussions/tab-previews-are-annoying/m-p/71271

Note that it isn't certain for how long you can disable a new feature like in this case "Tab Hover Preview" as they will likely remove support for this control pref like usually is done when they consider a new feature stable enough.

• 1914155 - Remove the browser.tabs.hoverPreview.enabled pref

(https://bugzilla.mozilla.org/page.cgi?id=etiquette.html)

I found browser.tabs.hoverPreview.enabled and there is no delete or disable in Advanced Preferences. So it looks like i am stuck with this add on.

Next to browser.tabs.hoverPreview.enabled will be the word "true." Double-click it and it will change to false and your troubles will be over.