[Bug] Bookmarked pages open in a new tab when accessed from Library

[lobontiumira]

Steps to reproduce

1. Bookmark a page.
2. Go to Library-Bookmarks and tap on the page from step 1.

Expected behavior

The page from step 1 should open in the same tab.

Actual behavior

The bookmarked page opens in a new tab, so now the user has 2 tabs opened with the same page.
Please see #242 (comment)

Device information

• Android device: Google Pixel (Android 9), Samsung Galaxy Tab S3 (Android 8.0), Motorola Nexus 6 (Android 7.1.1)
• Fenix version: 1.0.1917 (Build#11121210)

┆Issue is synchronized with this Jira Task

[vesta0]

This is expected behaviour.

[sv-ohorvath]

@vesta0 On Fennec, when a bookmarked page is already opened in a tab, tapping the bookmark will open that tab and not a new one. That is also the behavior we expected from #242 (comment)

[vesta0]

For reference here is the final UX decision which aligns with this behaviour: #1012 (comment)

[sv-ohorvath]

For reference here is the final UX decision which aligns with this behaviour: #1012 (comment)

Thank you, we weren't aware of this one.