1. Using Thunderbird (143.0.1) on a Mac (Sequoia 15.7) that has text replacements doesn't work. Mac text replacements ordinarily are filled In when the space bar is pressed, but in Thunderbird the replacements are filled in regardless, so, for instance, I have the text replacement "tr" -- when I press those letters followed by a space it ordinarily expands to the word "there". In Thunderbird every time I type those two letters, even if they are followed by other letters, it expands. So if I type "trunk" It looks good until I hit a space, when it expands to "thereunk". This happens whether I type the word or use speech input (Talon). I use a lot of text replacements for common words, so this happens frequently, making it unusable. I'm a longtime Thunderbird user just now switching to a Mac. I'm hoping for a fix so I can use text replacements in Thunderbird, but a short term workaround would be the ability to turn text replacements off through the edit\substitutions menu (like other programs including Notes). Thanks for listening. And thanks for doing all the good work — it’s a terrific program!