Solved my problem with "Move to new window" Rated 4 out of 5 stars

After reading https://github.com/ktakayama/faviconizetab/pull/14 and unpacking (after renaming to .zip) the faviconizetab.xpi downloaded from here , I modified content\faviconizetab.js as follows:

1. in function "enable" :
/*
* 17.05.15/AH session.setTabValue only accept strings, else javascript error in browser console
* if(this.session) this.session.setTabValue(tab, 'faviconized', true);
*/
if(this.session) this.session.setTabValue(tab, 'faviconized', '1');

2. in function "restore" :
*
* 17.05.15/AH session.setTabValue only accept strings, else javascript error in browser console
* if(faviconize.session.getTabValue(tab, 'faviconized'))
*/
if(faviconize.session.getTabValue(tab, 'faviconized') == '1')

3. set install.rdf to version 1.0.6.1 and maxversion 37.*
4. packed whole extracted folder to faviconizetab.1.0.6.1.zip and renamed it to .xpi
5. installed modified package in FF

No more error messages in browser console and "move to new tab" works again,
The FF default entry "open link in duplicate tab" does not work but addon "DuplicateTab" works.

Maybe someone with JS knowledge may to review this fix...

This review is for a previous version of the add-on (1.0.6.1-signed.1-signed).  This user has a previous review of this add-on.