Version 8.1.2 works in Linux, doesn't work in Windows
The current version of the add-on for TB 102.x (8.1.2) works in Linux (tested in Debian 11 x64 with TB 102.3.0 x64 from the official repository). No changes in the settings had to be made after updating TB via apt-get update. In Windows 10/11 x64 with the same TB version (102.3.0 x64), the add-on (again, v.8.1.2) does not work. The toolbar button is permanently disabled.
Also: in Windows, user preference selected under 'Click on "Show HTML":' is not saved (whereas other settings are saved correctly). Steps to reproduce: (1) Open Add-ons Manager > Extensions, click on the wrench icon to the right of "Allow HTML Temp". (2) Under 'Click on "Show HTML":', select, e.g., 'Original HTML'. (3) Return to the list of extensions (back arrow, top left). (4) Click on the wrench icon to the right of "Allow HTML Temp" -- none of the radio buttons under 'Click on "Show HTML":' is selected (i.e., the selection made in Step 2 has not been saved).