current FlashGot issue on Firefox 53.0.2 (win32)

[unknown]

Current FlashGot version (1.5.6.14) blocks new tabs to be opened after the first one on the latest Firefox release 53.0.2 (win32).
Disabling it solves the problem, but browsing without FlashGot is nonsense!
Does it happen to anyone else?

[unknown]

FYI with the latest Firefox update (53.0.3) the issue disappears and new tabs open regularly even with FlashGot enabled ^_^