Good to hear it works for you.
Meanwhile, recovering from the flu so been slow. Tested various builds to see where it looks for the dictionary files and got,
2023.12.25 looks for bdic in ./qtwebengine_dictionaries
2024.01.25 Settings says "The directory qtwebengine_dictionaries cannot be accessed. Please read Source/dooble_settings.cc, line 2285."
2024.11.23 Settings says "The directory qtwebengine_dictionaries cannot be accessed. Dooble searched W:/\qtwebengine_dictionaries. Please read Source/dooble_settings, line 2363."
2025.11.25 Settings says "Warning \en_CA.bdic cannot be accessed!"
Next is to boot to Linux and test and perhaps open an issue.
Martin, IIRC you have Dooble installed under Windows. Could you check the settings and see if the dictionaries are not found and what the message is?