#34 Firefox crashes when this extension is installed

[Anonymous]

To replicate:
1. Open Firefox up
2. Move Firefox window to the 2nd monitor (I am using a laptop with 2 monitors)
3. Press CTRL + T for new tab
4. Observe the behaviour

Actual:
Firefox crashes
Expected:
Extension should work on either monitor - the laptop one or the 2nd secondary monitor.
When this extension is used when firefox is on the primary laptop screen, extension works fine.