What does Bookmark Tabs look like on HTC?

On HTC it is the design shipped in Sense 8, shown above at full size. Older revisions are listed beneath it.

When did HTC add Bookmark Tabs?

HTC first drew Bookmark Tabs in Sense 7, released March 30, 2015.

HTC Corporation has shipped 2 versions of Bookmark Tabs. Each is dated, so you can see when the design changed.

HTC

HTC Corporation has drawn Bookmark Tabs 2 times. Every revision HTC has shipped is below, newest first.

What does Bookmark Tabs look like on HTC?: On HTC it is the design shipped in Sense 8, shown above at full size. Older revisions are listed beneath it.
When did HTC add Bookmark Tabs?: HTC first drew Bookmark Tabs in Sense 7, released March 30, 2015.
How many times has HTC redrawn Bookmark Tabs?: HTC Corporation has shipped 2 versions of Bookmark Tabs. Each is dated, so you can see when the design changed.

HTC artwork for this emoji spans 2015 to 2016.