Selected tabs are not into new group when addons opening tab right works

[masahal]

I use Tab Control to position new tabs to the right of the current tab(Because Firefox's default setting "browser.tabs.insertRelatedAfterCurrent" is not sufficient. it doesn't work when searching words from search box)
However, if such addons are installed, when creating new group, selected tabs are not into the new group.
The group works normally except that initially new tabs are not into.

I have confirmed this behaviour for two addons:
Tab Control: https://addons.mozilla.org/ja/firefox/addon/tab-control/
Always Right: https://addons.mozilla.org/ja/firefox/addon/always-right/