Bugs? Rated 5 out of 5 stars

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I have been using this add-on for one year. .
I have been helped.
Thank you

1. To add a new toolbar to Firefox
2. To install this add-on
3. The new toolbar will disappear

<I can confirm>
1. Safe mode to Firefox
2. To install one add-on
3. I will confirm that the new toolbar disappears

I repeated 2 and 3.
I have to install this add-on.
"New Toolbar" had disappeared.

Phenomenon that occurs with a probability of 100%.

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

I think I can finally reproduce and confirm this bug thanks to another similar report. I wish this issue has been reported on the support forum which would allow me to quickly reproduce it. Bug has been added to known issues.

Thanks for your review.

This bug is now fixed.