Tabs hangs many times since the last update

[zefilipe]

Hi,

Since the last update of Tab-groups addon (2.14), and Firefox update (53.0.3),
The active tag hangs many times (but after a seconds be ok), if i open other tab or when loading tab its occurs many times ... !

Sometimes i had to close or kill Firefox process and reopen !

But before the lastest update it works fine, without hangs !

Regards