[Bug] Add-on window flashes, instantly closing after opening

[deadcombo]

Hello,

I'm experiencing an issue where opening the search window does not work, as it closes immediately.

I'm using Firefox version 113.0a1 (2023-04-04) (64-bit), from the Nightly ring.

I have used it successfully on the first browser session after installing it. I attempted several reinstalls and manually clearing the add-on data. Please let me know if there's more information I can gather.

Thank you.