Underline / visual feedback for duplicated tabs

[NagyGabor]

Opera browser has this feature,

it underlines names in tabs with blue, if there are multiple instances open from same URL.

Also a right click option to remove duplicates.

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[Jon]

Similar idea here: Suggestion: Add "Close Duplicate Open Tabs" option to browser tab right click option 

[memory_of_chaos]

Visual feedback for duplicate tabs

Please implement visual feedback in tab bar for duplicate tabs. For example, in Opera if hovering over tab and if that tab has duplicate, both of them are highlighted.

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[Jon]

(Note: similar ideas have been merged into this thread)

[DaveFox1]

I strongly support this feature. E.g. follow a link > it opens in a new tab > a brief (5 seconds) flash on the new tab and the open tabs that have the same URL, or something like a permanent blue/underline a la Opera, as @NagyGabor suggests.

Would be a godsend for support tickets.

[Hipratboy]

Highlight Duplicate Tabs

Hello, I would like to suggest highlighting duplicate tabs similar to Opera GX. Example

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[Ventrol]

Similar tabs identification

Can you please under line opened tabs if two or more similar pages are already open. Opera has this feature and very easy to implement too.

[Jon]

(Note: similar ideas have been merged into this thread)