5 つ星中 3つの評価を受けています

投稿者: Andy_P - 12月 18, 2014 · 固定リンク

I have just tried to install this add-on to Thunderbird 31.3.0.

It says it is installed, but when I right-click the Toolbar and select customize, I cannot find a button labelled "Titlebar Cleaner" in the list of available icons.
Please help.