Rated 5 out of 5 stars

Good addon, but I see a conflict with TabMixPlus here. I cant normally use the Location bar, when these addons are installed at the same time. I'm using the latest DevBuild from the forum TMP. Check please.

This review is for a previous version of the add-on (1.77). 

FS and TMP barely have any overlapping functions. If you meant that you set in TMP such that any search keyword opens a new tab, and this setting is NOT respected by FS, then you could go to 'Misc. Settings' of FS's Options, and the top checkbox says 'Search opens new tab', check it and save. That should do it.

If that's not what you meant, please give me more details as to what exactly is not working in your LocationBar when TMP+FS are installed together. I didn't see any conflict of FS and TMP when using default TMP settings.