mstockin

I have the same problem here at a Win11 Citrix VM with Thunderbird 115.8.0 (32-Bit). Lightning appears, but not working and the options icon in the addon settings is grayed...

Sorry for the late response... The output at the console was not helpfull for me. Perhaps for you: Uncaught (in promise) Error: An unexpected error occurred 12 undefined moz-extension://50ba90b2-a419-4b9d-b8bc-47a9940143c8/background.js:91 AsyncFunctionThrow...