A few examples of issues that may occur.
0.14 (2018-04-04)
Works with Firefox 57.0 and later
With Waterfox 56.2.0 on FreeBSD-CURRENT, the Decontain option causes disappearance of the tab.
0.8 (2018-02-14
Works with Firefox for Android 48.0 and later, Firefox 48.0 and later